Hip Hemiarthroplasty

Hip hemiarthroplasty is a partial hip replacement operation that replaces the femoral head and neck while preserving the patient's natural acetabulum. The word hemi means half, which is why the operation is often referred to as a partial hip replacement. Only the femoral side of the ball-and-socket joint receives an artificial component.

The hip is formed by the round head of the femur fitting into the cup-shaped acetabulum of the pelvis. During hemiarthroplasty, the fractured or damaged femoral head is removed. The surgeon prepares the upper femur and inserts a metal stem. A prosthetic head is then attached to that stem and articulates directly with the patient's remaining acetabular cartilage.

This makes hip hemiarthroplasty fundamentally different from a total hip replacement. In total hip arthroplasty, the surgeon replaces not only the femoral head but also the acetabular surface with an artificial cup and liner. In hemiarthroplasty, there is no routine acetabular cup.

Why Is Hip Hemiarthroplasty Usually Performed After a Hip Fracture?

The classic indication is a displaced intracapsular femoral neck fracture in an older adult. This fracture occurs through the neck of the femur, just below the femoral head and inside the hip joint capsule.

The blood vessels supplying the femoral head travel through this region. When the fracture becomes displaced, those vessels can be disrupted. This creates a significant risk that the femoral head will not heal properly even if the fracture is put back together and fixed with screws.

Older patients also commonly have osteoporosis. Fragile bone may not hold fixation as reliably as younger, stronger bone. For these reasons, replacing the femoral head can provide a more dependable mechanical solution than trying to preserve it in selected older adults.

Hemiarthroplasty also removes the problem of femoral-head avascular necrosis because the native femoral head has been replaced. It can allow the patient to mobilize relatively quickly, which is particularly important after a hip fracture because prolonged bed rest can contribute to pneumonia, blood clots, pressure injuries, muscle loss and loss of independence.

What Does “Hemiarthroplasty Hip” Mean?

Patients sometimes search for “hemiarthroplasty hip” rather than hip hemiarthroplasty. Both expressions refer to the same general operation.

The medically preferred term is hip hemiarthroplasty. It describes replacement of the femoral portion of the hip while retaining the native acetabulum.

In everyday clinical conversations, the procedure may also be called a partial hip replacement, half hip replacement or hemi hip replacement. These terms should not be confused with hip resurfacing, which is an entirely different operation.

What Is Replaced During Hip Hemiarthroplasty?

The fractured femoral head and part of the femoral neck are removed. A prosthetic stem is implanted into the femoral canal. The stem connects to an artificial femoral head whose diameter is selected to match the patient's natural acetabulum.

Depending on the implant, the artificial head can be unipolar or bipolar. A unipolar implant has a single main articulation between the prosthetic head and the natural acetabulum. A bipolar implant contains an additional articulation inside the prosthetic head.

The natural acetabular cartilage remains in place. This preservation is one of the main reasons the procedure is shorter and less extensive than total hip arthroplasty.

What Is Left Unchanged?

The acetabulum is not routinely resurfaced. Its cartilage and bone remain part of the joint.

This means the acetabulum must be sufficiently healthy for hemiarthroplasty to make sense. If the socket already has substantial osteoarthritis, inflammatory joint damage or another major acetabular abnormality, total hip replacement may provide a better reconstruction.

The surgeon can inspect the acetabulum during surgery after the fractured femoral head is removed. Unexpected severe acetabular damage may sometimes influence the operative plan.

Why Not Repair Every Femoral Neck Fracture With Screws?

Fracture fixation is valuable when preserving the natural femoral head is biologically and mechanically reasonable. This is particularly important in younger patients, where maintaining the patient's own joint is generally a major priority.

The situation is different in an older patient with a displaced intracapsular fracture. The combination of disrupted femoral-head blood supply, displacement and weaker bone makes healing less predictable. Fixation can fail because of nonunion, loss of fixation or avascular necrosis.

For that reason, major hip-fracture guidelines favor arthroplasty over fixation for many older adults with unstable displaced femoral neck fractures.

This does not mean every femoral neck fracture requires hemiarthroplasty. Nondisplaced fractures, younger patients and different fracture patterns require separate decision-making.

Hemiarthroplasty vs Total Hip Replacement

The difference is simple anatomically but more complex clinically.

A hip hemiarthroplasty replaces the femoral head and neck while keeping the natural acetabulum. A total hip replacement replaces both the femoral side and the acetabular side.

Hemiarthroplasty generally involves less reconstruction and a shorter operation. This can be advantageous in older, frailer patients who may benefit from limiting surgical burden.

Total hip replacement can provide better functional results for some more active and independent patients because both joint surfaces are reconstructed. It can also avoid future pain caused by erosion of the native acetabulum against the hemiarthroplasty head.

The decision therefore depends on more than age alone. Pre-fracture mobility, cognitive status, medical health, life expectancy, acetabular condition and expected activity all matter.

Who May Benefit More From Total Hip Replacement?

A fit and active older adult who was independently walking outdoors before the fracture and is expected to remain independent for years may be considered for total hip arthroplasty rather than hemiarthroplasty.

Pre-existing symptomatic hip osteoarthritis is another important consideration. If the acetabulum is already significantly arthritic, leaving it intact can result in continued pain.

Total hip replacement requires acetabular preparation and insertion of an additional component. It can therefore increase operative complexity compared with hemiarthroplasty.

The decision should balance potential functional benefit against the patient's physiological reserve and complication risk.

Why Can Hemiarthroplasty Be Appropriate for Frailer Patients?

A frail older adult may have cardiovascular disease, cognitive impairment, reduced mobility or multiple medical conditions. The primary goals after a hip fracture may be to relieve pain, stabilize the hip and allow the patient to sit, transfer and walk as soon as possible.

Hemiarthroplasty can accomplish these goals without adding the acetabular reconstruction required for a total hip replacement.

A shorter and less extensive operation may be advantageous when additional operative burden offers limited functional benefit.

The correct operation is therefore not necessarily the most technically sophisticated replacement. It is the reconstruction that best matches the patient.

What Is a Left Hip Hemiarthroplasty?

A left hip hemiarthroplasty simply means that the procedure is performed on the left hip.

The same basic surgical principles apply: the fractured left femoral head is removed, the left femoral canal is prepared and a hemiarthroplasty prosthesis is implanted.

The side does not determine whether the implant is unipolar or bipolar, cemented or cementless.

Rehabilitation is also broadly similar. Practical matters such as entering a car, using stairs and eventually returning to driving can differ slightly according to which side was operated on.

What Is a Right Hip Hemiarthroplasty?

The phrase right hemiarthroplasty hip or right hip hemiarthroplasty refers to the same partial hip replacement performed on the right side.

There is no fundamental difference in the biological healing process.

Driving may require particular caution after a right-sided operation because the right leg usually controls the accelerator and brake in countries using conventional automatic or manual vehicle layouts.

Regardless of side, driving should resume only when the patient has adequate strength and reaction time, is no longer impaired by medication and has been medically cleared.

Is Hip Hemiarthroplasty an Elective Operation?

Most primary hip hemiarthroplasties are not elective in the way that routine arthritis-related total hip replacements are.

They are usually performed because a patient has fallen or sustained trauma and developed a femoral neck fracture.

This is an important distinction for medical-travel websites. A patient with an acute displaced hip fracture should not routinely spend days arranging flights, hotels and international treatment if appropriate emergency orthopaedic care is locally available.

Hip fracture treatment is time-sensitive. Medical optimization should happen efficiently so that unnecessary delay is avoided.

Other Reasons for Hip Hemiarthroplasty

Although displaced femoral neck fracture is by far the major indication, hemiarthroplasty may occasionally be considered in other reconstructive situations.

Pathological fractures caused by metastatic disease can sometimes be treated with hemiarthroplasty when the acetabulum is healthy and the fracture pattern involves the femoral neck.

Selected failed femoral-neck fixation cases can also require arthroplasty.

However, when acetabular arthritis is already present or long-term high activity is expected, total hip arthroplasty often becomes more attractive.

What Is Bipolar Hip Hemiarthroplasty?

A bipolar prosthesis has two articulating interfaces.

The large outer metal head moves against the patient's acetabulum, while an additional smaller articulation exists inside the prosthetic head.

The theoretical concept is that some movement occurs within the implant, potentially decreasing motion between the outer head and acetabular cartilage.

Despite this mechanical design, clinical studies have not consistently shown a large overall advantage of bipolar implants over unipolar hemiarthroplasty.

Implant availability, surgeon preference, patient factors and hospital procurement can influence the choice.

What Is Unipolar Hip Hemiarthroplasty?

A unipolar hemiarthroplasty has one primary articulation between the prosthetic head and the native acetabulum.

Modern systems can still be modular, allowing the surgeon to adjust head size, neck length and offset.

Unipolar prostheses have historically been less expensive in many healthcare systems.

The important point for patients is that a bipolar prosthesis should not automatically be interpreted as a superior or more advanced solution. Major guideline evidence supports both designs as reasonable options for displaced femoral neck fractures.

Cemented vs Cementless Hemiarthroplasty

A cemented stem is fixed inside the femur using bone cement. This provides immediate mechanical stability.

A cementless stem relies on a press-fit relationship with the patient's bone, followed by biological bone growth onto or into the implant surface.

For older hip-fracture patients, several major guidelines recommend cemented stems. One important reason is the risk of periprosthetic fracture with cementless stems in fragile osteoporotic bone.

Cemented implantation has its own considerations, however. Cementation can rarely be associated with significant cardiovascular changes, particularly in frail patients. This is why communication between the surgeon and anaesthetist is important during preparation and insertion.

Does Hemiarthroplasty Cure Osteoporosis?

No. It treats the fractured hip but does not treat the underlying osteoporosis that may have contributed to the fracture.

A low-energy hip fracture in an older adult should trigger evaluation of bone health and future fracture risk.

The patient may need assessment for osteoporosis, vitamin D and calcium status where appropriate, fall risk and medication that reduces the risk of future fragility fractures.

Preventing the next fracture is a major part of good hip-fracture care.

Emergency Assessment

Hip hemiarthroplasty frequently begins with an emergency admission after a fall.

The first priorities are confirming the fracture, controlling pain and evaluating the patient's medical condition.

The limb may appear shortened and externally rotated. The patient often cannot stand or bear weight.

However, some impacted or incomplete fractures can present more subtly, so persistent hip or groin pain after a fall deserves appropriate imaging.

X-Rays

Anteroposterior pelvic and hip X-rays are usually the first imaging studies.

They show the fracture location and displacement.

A displaced intracapsular fracture can frequently be identified clearly on plain radiographs.

The surgeon also examines the opposite hip and overall pelvic anatomy, and looks for signs of pre-existing osteoarthritis.

CT or MRI

CT is not routinely necessary for every obvious displaced femoral neck fracture.

It can be useful when the fracture pattern is unclear, when there may be extension into the trochanteric region or when more complex proximal femoral anatomy needs to be defined.

MRI is highly sensitive for occult hip fractures when X-rays are normal but clinical suspicion remains high.

The imaging strategy should be chosen according to the clinical situation rather than ordering every scan routinely.

Timing of Surgery

Hip fracture surgery should generally proceed promptly once the patient has been medically assessed and correctable problems have been addressed.

The objective is not to operate recklessly without optimization, but also not to postpone surgery for minor or unnecessary reasons.

Conditions such as significant anaemia, uncontrolled heart failure, severe electrolyte disturbance or active chest infection may need immediate treatment.

Efficient orthogeriatric and anaesthetic assessment helps distinguish genuine reasons for delay from problems that can be managed without postponing surgery for days.

Pain Control Before Surgery

Hip fractures can be extremely painful.

Pain should be treated from the time the patient arrives in hospital.

Medication can include paracetamol or acetaminophen and carefully selected opioid treatment when required.

Regional nerve blocks can provide effective pain relief and reduce the amount of systemic opioid medication needed.

Good pain control can also make positioning for X-rays, nursing care and spinal anaesthesia easier.

Medical Optimization

Many patients requiring hemiarthroplasty are older and have chronic medical conditions.

The team reviews heart disease, lung disease, previous stroke, kidney function, diabetes and cognitive status.

The purpose is to correct reversible problems while avoiding unnecessary investigations that would simply delay fracture stabilization.

This assessment is often performed collaboratively by orthopaedic surgeons, anaesthetists and geriatric physicians.

Blood Tests

Typical preoperative investigations include a complete blood count, electrolytes, kidney function and coagulation studies where appropriate.

Blood type and screening may be performed because hip fracture surgery can involve blood loss.

Anaemia is common in older adults and can worsen after fracture and surgery.

The transfusion strategy depends on haemoglobin level, symptoms, cardiovascular disease and overall condition.

Anticoagulants and Blood-Thinning Medication

Many older hip-fracture patients take anticoagulants or antiplatelet drugs.

The surgical and anaesthetic teams need to know exactly which drug was taken, the dose and the timing of the last dose.

Management varies according to the medication.

The aim is to reduce bleeding risk without exposing the patient to unnecessary delay or increased thrombotic risk.

Patients should not make these medication decisions themselves.

Anaesthesia Assessment

Both spinal and general anaesthesia can be used for hip fracture surgery.

The anaesthetist considers the patient's medical history, anticoagulation status, preferences and practical considerations.

Regional analgesic blocks can be combined with either approach.

There is no universal rule that every hip hemiarthroplasty must be performed under spinal anaesthesia.

Delirium Risk

Delirium is common after hip fracture, especially in older patients with pre-existing cognitive impairment.

It can appear as confusion, agitation, drowsiness or fluctuating attention.

Pain, infection, dehydration, medication, sleep disturbance and unfamiliar surroundings can contribute.

Early surgery, good pain control, hydration, hearing aids, glasses, orientation and family involvement can all form part of delirium prevention and management.

Nutrition

Older hip-fracture patients are frequently malnourished or at risk of malnutrition.

Protein and energy requirements increase during recovery.

Poor nutritional status can impair wound healing and muscle recovery.

Nutritional screening and supplementation may therefore be part of multidisciplinary care.

This is particularly important because regaining muscle strength is essential to walking after surgery.

Fracture and Implant Planning

The surgeon reviews the fracture and estimates the femoral stem and head sizes.

Templates can be used on radiographs.

The opposite hip can help provide information about femoral anatomy and offset.

The final head diameter is commonly confirmed intraoperatively using the removed femoral head and trial components.

Choosing Hemiarthroplasty vs Total Hip Replacement

This decision should ideally occur before surgery, while still allowing the surgeon to respond to unexpected findings.

Important factors include the patient's pre-fracture walking ability, independence, cognitive status, medical comorbidity and acetabular condition.

An active person with a healthy physiological profile may derive more functional benefit from total hip replacement.

A less active or frailer patient may gain an excellent balance of pain relief and surgical efficiency from hemiarthroplasty.

Choosing Unipolar vs Bipolar Hemiarthroplasty

Both designs remain accepted.

Bipolar implants contain a second articulation within the prosthetic head, but clinical evidence does not establish a universal functional advantage over unipolar designs.

A surgeon may choose based on local implant availability, cost, patient characteristics and familiarity.

The quality of stem fixation, restoration of leg length and appropriate head sizing can be more important than simply labeling the prosthesis bipolar.

Choosing Cemented vs Cementless Fixation

For many older adults with femoral neck fractures, cemented fixation is favored by major guidelines.

Fragile osteoporotic bone may be more vulnerable to fracture during insertion of a tight press-fit cementless stem.

Cement provides immediate fixation and can allow early weight bearing.

The anaesthetic team nevertheless needs to be prepared for the cardiovascular changes that can occasionally accompany cementation and femoral instrumentation.

The safest decision is individualized and depends on the patient, bone and surgical setting.

Preventing Infection

Antibiotic prophylaxis is administered according to hospital protocol.

The surgical site is prepared carefully.

Active infections elsewhere in the body are considered during medical assessment.

Because the implant is a permanent foreign material, preventing prosthetic infection is a major priority.

Preventing Blood Clots

Hip fracture itself, surgery and postoperative immobility all increase venous thromboembolism risk.

Blood-clot prevention can include anticoagulant medication, early mobilization and mechanical measures according to local guidelines and individual risk.

The patient and family should understand that thrombosis prevention continues after the operating room.

Discussing Goals With the Patient and Family

Hip fracture can be a major life event.

The conversation should include more than the technical details of the implant.

The team should discuss expected mobility, likely rehabilitation needs, discharge destination and the patient's pre-fracture level of independence.

For frail patients, it is important to be realistic about the fact that surgery repairs the mechanical problem but does not instantly reverse frailty or underlying medical disease.

Hip hemiarthroplasty surgery removes the fractured femoral head and replaces it with a prosthetic femoral stem and artificial head while preserving the patient's natural acetabulum.

The operation begins after anaesthesia and antibiotic prophylaxis. The patient is positioned according to the surgical approach. The surgeon exposes the hip joint, removes the fractured femoral head, prepares the femoral canal, inserts the selected stem and attaches a prosthetic head sized to fit the natural socket.

The artificial head is then reduced into the acetabulum. The surgeon checks stability, leg length and soft-tissue tension before closing the wound.

Patient Positioning

Position depends on the surgical approach.

Some approaches are performed with the patient lying on the side, while anterior techniques can be performed with the patient supine.

Padding is important because many hip-fracture patients have fragile skin and limited physiological reserve.

The surgical team also needs access for anaesthetic monitoring and safe limb manipulation.

Surgical Approaches

Hip hemiarthroplasty can be performed through posterior, lateral, anterolateral or anterior approaches.

Each approach creates a different path through the tissues surrounding the hip.

Modern evidence does not establish one approach as universally superior across every important outcome.

However, the approach can influence the type of soft-tissue repair and the movement advice given during early recovery.

The most important factor is that the surgeon uses an approach they can perform safely and reproducibly.

Posterior Approach

A posterior approach accesses the hip from behind.

The surgeon works through the gluteal region and typically releases selected short external rotator structures and the posterior capsule to reach the joint.

These structures are repaired when possible before closure.

Posterior exposure provides good access to the femur and is familiar to many surgeons.

Traditional posterior precautions have focused on avoiding excessive flexion, adduction and internal rotation while soft tissues heal, although contemporary protocols are increasingly individualized.

Lateral and Anterolateral Approaches

Lateral and anterolateral approaches reach the hip from the side or front-side region.

They provide reliable access for fracture arthroplasty.

Depending on the exact technique, part of the abductor mechanism can be split or detached and repaired.

Rehabilitation instructions can therefore emphasize protection of the healing abductor tissues.

Patients should follow the protocol for the actual operation performed rather than apply generic internet precautions.

Direct Anterior Approach

The direct anterior approach works through an intermuscular interval at the front of the hip.

It can also be used for hemiarthroplasty in selected patients.

The approach avoids routine posterior soft-tissue release, but femoral exposure can be technically demanding.

As with total hip replacement, the anterior approach should be selected because it suits the surgeon and patient rather than because it is marketed as inherently superior.

Opening the Joint

The surgeon opens the hip capsule and identifies the fractured femoral neck.

The broken femoral head is separated from the remaining femur.

Because the fracture has already disrupted normal anatomy, the head is commonly extracted as a separate piece.

The capsule and labrum may be preserved as much as practical because these tissues can contribute to stability.

Removing the Femoral Head

The surgeon removes the fractured femoral head using appropriate extraction instruments.

Once it is out, its size can be measured.

The acetabulum is inspected for cartilage damage, fracture fragments or unexpected arthritis.

Small loose bone fragments are removed.

If major pre-existing acetabular disease is present, the surgeon may reconsider whether total hip replacement is more appropriate.

Femoral Neck Cut

A controlled femoral neck osteotomy creates the correct level for the implant.

The height matters because it influences leg length, hip offset and soft-tissue tension.

Too much or too little bone removal can alter hip mechanics.

The surgeon uses anatomical landmarks and preoperative planning to guide the cut.

Preparing the Femoral Canal

The upper femur is exposed carefully.

The medullary canal is opened and progressively shaped using broaches or rasps.

These instruments create a cavity that matches the selected stem geometry.

Particular care is necessary in osteoporotic bone because excessive force can cause a femoral fracture.

The surgeon evaluates alignment and rotational position while preparing the canal.

Choosing the Stem Size

Trial broaches help determine the correct implant size.

The stem should achieve appropriate fit and alignment.

An undersized component can be unstable.

An excessively large component can increase fracture risk or alter mechanics.

The surgeon also considers the stem's offset and neck options because these influence soft-tissue tension and leg length.

Cemented Hemiarthroplasty

When cemented fixation is used, the femoral canal is cleaned and prepared.

A distal plug can be placed, and bone cement is introduced using a controlled technique.

The stem is inserted in the intended rotational orientation while the cement hardens.

Cement can provide excellent immediate fixation in osteoporotic bone.

The surgeon and anaesthetist communicate closely during this stage because femoral instrumentation and cement insertion can produce cardiovascular changes in susceptible patients.

Bone Cement Implantation Syndrome

Bone cement implantation syndrome is a recognized perioperative complication associated particularly with frail hip-fracture patients undergoing cemented hemiarthroplasty.

It can involve a drop in blood pressure, reduced oxygen levels or, rarely, severe cardiovascular collapse around the period of canal preparation, cementation and implant insertion.

The fact that this complication exists does not mean cement should automatically be avoided. Cemented fixation has important benefits in the older hip-fracture population.

Instead, high-risk patients should be identified and the surgical and anaesthetic teams should follow established safety measures.

Cementless Hemiarthroplasty

A cementless stem obtains initial fixation by fitting tightly against the femoral bone.

The implant surface is designed for later biological integration.

This avoids bone cement but requires adequate bone strength to achieve secure press-fit fixation.

Older osteoporotic patients can be more vulnerable to periprosthetic fracture during insertion.

Cementless stems remain useful in selected circumstances, but fixation strategy should be chosen according to evidence, bone quality and surgeon judgment.

Sizing the Hemiarthroplasty Head

The removed native femoral head provides an important sizing reference.

The surgeon measures its diameter and tests trial heads within the acetabulum.

A head that is too small can create instability or abnormal mechanics.

One that is too large can overfill the joint and increase tension.

The objective is smooth articulation with appropriate stability.

Bipolar Head Assembly

With a bipolar prosthesis, a smaller inner femoral head connects to the stem and moves inside a larger outer shell.

The outer component articulates with the natural acetabulum.

The system is assembled according to manufacturer specifications.

Modularity allows the surgeon to adjust parameters such as neck length.

Unipolar Head Assembly

A modular unipolar head connects to the femoral stem and articulates directly with the acetabulum.

Different head sizes allow the prosthesis to match the patient's natural anatomy.

Although mechanically simpler than a bipolar design, a modern unipolar implant can still provide excellent function in appropriately selected patients.

The design should not be judged solely by the number of articulations.

Trial Reduction

Before finalizing the components, the surgeon reduces the trial prosthesis into the acetabulum.

Hip stability is assessed through a controlled range of motion.

Soft-tissue tension and leg length are evaluated.

If the joint feels unstable or excessively tight, the surgeon can adjust head or neck length and reassess component position.

Restoring Leg Length

The fractured leg may appear shortened before surgery because the fracture fragments have displaced.

Hemiarthroplasty aims to restore an appropriate functional leg length.

Perfect mathematical equality is not always possible or desirable because stability and soft-tissue tension also matter.

A small perceived difference can also result temporarily from pelvic position, muscle tightness or adaptation after the fracture.

Final Implantation

Once the surgeon is satisfied with the trials, the definitive components are implanted.

The prosthetic head is reduced into the acetabulum.

The surgeon performs a final stability assessment.

The wound is irrigated and inspected for bleeding.

Soft-Tissue Repair

Structures opened during the approach are repaired according to technique.

Posterior capsule and short rotator repair can contribute to stability after a posterior approach.

Lateral approaches may require careful repair of abductor tissues.

The integrity of this repair can influence rehabilitation instructions.

Wound Closure

The wound is closed in layers.

The skin may be closed with sutures, staples or another approved closure method.

A sterile dressing is applied.

Some higher-risk wounds may receive specialized dressings.

The patient's skin quality, anticoagulation and nutritional status can all influence wound healing.

Immediately After Surgery

After hip hemiarthroplasty, the patient moves to the recovery area while anaesthesia wears off.

Blood pressure, oxygen level, heart rate, pain and the operated limb are monitored.

The team checks the dressing and assesses foot circulation and neurological function.

Older patients may need closer observation because changes in blood pressure, oxygenation or mental status can have a greater clinical impact than they would in a younger elective patient.

Pain Control

Pain management usually combines different strategies.

Paracetamol or acetaminophen, regional nerve blocks and carefully selected opioid medication can be used depending on the patient.

The objective is not merely comfort while lying in bed.

Pain should be sufficiently controlled to allow the patient to sit, transfer and participate in rehabilitation.

Excessive sedation should also be avoided because it can worsen confusion and increase fall risk.

Getting Out of Bed

Mobilization begins early when the patient is medically stable.

Many patients sit out of bed and stand with a physiotherapist by the day after surgery.

Some can begin the same day.

The first session may involve only a few steps.

That is still important because a hip fracture can rapidly lead to muscle loss and deconditioning.

Weight Bearing After Hip Hemiarthroplasty

A major objective of fracture arthroplasty is to create a reconstruction stable enough for early weight bearing.

After a well-fixed cemented hemiarthroplasty, patients are frequently allowed weight bearing as tolerated.

This means the patient can put as much weight through the leg as comfort and control allow while using a walker or other support.

Restrictions can still be necessary in unusual cases, such as an intraoperative fracture, trochanteric reconstruction or another mechanical concern.

The operative surgeon's instruction therefore takes priority.

Walker or Crutches

A walker is often easiest for an older patient initially because it provides a wide base of support.

Crutches can be used by patients with adequate balance and upper-body strength.

A cane usually becomes useful later as gait improves.

The choice of walking aid should be based on safety rather than the patient's desire to progress as quickly as possible.

Daily Physiotherapy

Rehabilitation focuses on getting the patient moving rather than spending unnecessary time in bed.

Therapists practice standing, transfers, walking and stairs where relevant.

Muscle activation and basic exercises are introduced.

The programme needs to reflect the patient's pre-fracture function.

Someone who used a walker before the fracture should not be compared with a previously independent recreational walker.

Delirium Monitoring

Confusion can become obvious after surgery.

The patient may not recognize the hospital, may become agitated at night or may appear unusually sleepy.

The team checks for causes such as pain, infection, dehydration, urinary retention, medication effects and hypoxia.

Family members can help by providing familiar voices and information about the patient's normal cognitive baseline.

Eating and Drinking

Early nutrition supports recovery.

Patients are encouraged to resume oral intake when safe.

Adequate protein is particularly important for muscle and wound healing.

Hydration also matters because dehydration can worsen kidney function, low blood pressure and delirium.

Blood-Clot Prevention

Preventive anticoagulation is commonly used unless contraindicated.

Mechanical methods may also be applied.

Early walking provides additional protection.

The duration of medication varies by guideline and individual risk, so discharge instructions should clearly state how long treatment is required.

Discharge Destination

Not every hemiarthroplasty patient goes directly home.

Some need inpatient rehabilitation or a temporary nursing facility.

Others return home with family support and community physiotherapy.

The decision depends on mobility, cognition, home environment and pre-fracture independence.

A medically successful operation should be linked to a realistic rehabilitation plan.

Recovery after hip hemiarthroplasty is influenced by two events at the same time: the surgery and the hip fracture that made surgery necessary.

This distinction matters. An elective total hip replacement patient may arrive for surgery after weeks of organized preparation. A hip-fracture patient may suddenly go from independent living to emergency admission after a fall.

The first goal is therefore to restore safe mobility quickly enough to prevent the complications of prolonged immobility.

The First 24 Hours

The patient is monitored closely after surgery.

Pain control, hydration and medical stability are priorities.

When safe, the patient begins sitting and standing with assistance.

Exercises may include ankle pumps, quadriceps activation and simple movement of the operated limb.

A few controlled steps with a walker can represent a major early milestone.

Days 2–7

Walking distance gradually increases.

Patients practice getting in and out of bed, using the toilet and moving between chair and standing position.

The wound is monitored.

Swelling and bruising around the hip and thigh are expected.

The patient may still have considerable fatigue.

Older people can require repeated encouragement because fear of falling can persist even when the implant itself is stable.

Weeks 1–2

The main goals are safe household mobility, wound healing and establishing a sustainable exercise routine.

A walker is still appropriate for many patients.

Some individuals transition to crutches or a cane.

Others remain on a walker longer because of balance problems or pre-existing weakness.

There is no prize for abandoning an assistive device early.

A stable gait is more important.

Weeks 3–6

Strength and confidence commonly improve.

The patient may walk farther and spend more of the day out of bed.

Basic household tasks become easier.

Formal physiotherapy can focus on hip strength, balance and gait training.

Patients who were independent before the fracture may make substantial progress during this period, while frailer patients can require considerably more assistance.

Weeks 6–12

Many patients enter the main functional recovery period.

The wound has healed and soft tissues are becoming more mature.

Walking aids can be reduced when balance and gait allow.

Hip precautions, if prescribed, may also be reviewed during this period.

The patient should not assume that six weeks automatically means all restrictions disappear; the operating team should confirm the plan.

Months 3–6

Muscle strength and endurance can continue improving.

Some patients approach their pre-fracture level of independence.

Others retain a walking aid because of balance, frailty or conditions unrelated to the hip.

The distinction between implant success and overall mobility is important.

A perfectly functioning hemiarthroplasty cannot reverse Parkinson's disease, severe arthritis in the opposite knee or advanced frailty.

Months 6–12

Improvement can continue for a year after hip fracture.

The patient may become more confident outdoors and regain endurance.

The final outcome is strongly influenced by pre-fracture health and independence.

A hip fracture can mark a major decline for some frail older adults, which is why multidisciplinary rehabilitation, nutrition, osteoporosis treatment and fall prevention deserve as much attention as the implant itself.

Hip Hemiarthroplasty Recovery Time

There is no single recovery time that applies to everyone.

For CMS purposes, approximately 12 weeks is a reasonable representation of major functional recovery.

However, some patients regain basic mobility within several weeks, while others require months of rehabilitation.

The fact that the implant allows early weight bearing should not be confused with the entire patient being fully recovered.

Walking After Hip Hemiarthroplasty

Walking usually begins very early.

A cemented prosthesis can often support immediate weight bearing, assuming no additional fracture or reconstruction requires protection.

Initially, the patient's limiting factors may be pain, balance, blood pressure or fear rather than implant strength.

Short, frequent walks are usually more useful than exhausting sessions.

Can the Patient Walk Normally Again?

Many patients regain useful independent walking.

The probability depends strongly on how they walked before the fracture.

Someone who was active and independently mobile has a different recovery potential from someone who was already dependent on a frame and caregiver.

Gait can remain abnormal temporarily because of muscle weakness.

Targeted rehabilitation helps reduce compensatory limping.

Stairs

Stair training begins when safe.

The physiotherapist teaches a controlled pattern using a railing and walking aid.

Many patients can negotiate a small number of stairs before discharge.

The ability to use stairs is particularly important when deciding whether returning home is practical.

Getting In and Out of Bed

Transfers are a major early rehabilitation skill.

Patients learn how to move the operated leg while maintaining balance.

Traditional advice often included elaborate restrictions, but modern rehabilitation aims to keep instructions simple enough that older patients can actually follow them.

The occupational or physical therapist adapts the technique according to surgical approach and patient ability.

Returning to the Toilet and Bathroom

Bathroom safety is particularly important because falls frequently occur during transfers.

Raised toilet seats were traditionally prescribed routinely when strict hip precautions were used.

Current practice varies.

Some patients still benefit from adaptive equipment, while others do not require it.

The rehabilitation team should prescribe equipment because it improves safety, not simply because the patient had hemiarthroplasty.

Showering

Whether the patient can shower depends on the dressing and wound closure.

Some modern dressings are water resistant.

The incision should not be soaked until it has healed adequately.

Bath entry is more challenging than a walk-in shower and can increase fall risk.

A shower chair or handrail may be useful for some patients.

Sleeping

Patients should choose a comfortable sleeping position that complies with any approach-specific precautions.

Back sleeping is common initially.

Side sleeping can become possible as pain settles, but the exact timing depends on wound position, soft-tissue repair and surgeon guidance.

Pillows can be used for comfort and positioning.

Swelling and Bruising

Swelling around the hip and thigh is normal.

Bruising can travel downward due to gravity.

The leg can appear dramatically discolored even when healing normally.

The key is the trend.

Sudden increasing swelling, marked calf pain, shortness of breath or chest pain requires urgent assessment because venous thrombosis and pulmonary embolism must be considered.

Pain

Pain should gradually improve.

The deep acute pain from the fracture is mechanically addressed by replacing the femoral head.

Surgical soreness can remain for weeks.

Pain that improves and then suddenly becomes much worse needs evaluation.

Potential causes include infection, fracture, dislocation or another medical problem.

Return to Work

Many hemiarthroplasty patients are retired, but working adults can still require the operation.

Desk work may become possible within several weeks if mobility and concentration are adequate.

Physical employment requires a longer recovery.

The reason for surgery should also be considered: a patient recovering from a major fracture may experience more fatigue than someone recovering from an uncomplicated elective operation.

Driving After Left Hip Hemiarthroplasty

A left hip hemiarthroplasty may interfere less directly with braking in an automatic vehicle, but that does not mean driving is immediately safe.

Patients must be able to enter and leave the car comfortably, react quickly and drive without sedating medication.

Local driving laws and insurer requirements should also be respected.

Medical clearance remains appropriate.

Driving After Right Hip Hemiarthroplasty

After a right hip hemiarthroplasty, return to driving may take longer because the operated leg is usually responsible for braking and acceleration.

Reaction time, strength and pain need to recover adequately.

The patient must be capable of an emergency stop without hesitation.

A calendar date alone cannot establish driving safety.

Flying After Hip Hemiarthroplasty

Long-distance travel soon after hip-fracture surgery requires caution.

The patient has recently had major surgery, is at increased risk of blood clots and may still be medically fragile.

A patient treated locally for an acute fracture should not feel pressured to fly merely because the incision has healed.

When international travel is unavoidable, timing should be discussed with the treating team and blood-clot prevention, mobility and access to care should be planned.

Rehabilitation for Frail Patients

Frail adults often need more than routine exercises.

They can require nutritional support, falls assessment, medication review and coordinated geriatric rehabilitation.

Even small improvements such as transferring independently from bed to chair can have major effects on quality of life.

Rehabilitation goals should therefore be individualized.

Preventing Another Fall

A previous hip fracture substantially changes future risk.

Fall prevention includes examining vision, footwear, balance, blood pressure and medications that may cause dizziness.

The home environment should be reviewed.

Loose rugs, poor lighting and lack of handrails can be corrected.

Strength and balance training are important when physically possible.

Osteoporosis Treatment

The fracture should prompt evaluation for osteoporosis.

Bone health treatment aims to reduce the chance of future vertebral, wrist or opposite-hip fractures.

Medication options depend on kidney function, fracture risk and other medical factors.

The orthopaedic episode should therefore connect the patient to longer-term fracture prevention.

Success cannot be defined by the X-ray alone.

A technically successful operation should provide a stable implant, good pain control and the ability to begin mobilization.

Functional success also means helping the patient recover as much of their previous independence as possible.

For a frail patient who walked only short household distances before injury, returning to safe transfers and assisted walking may represent an excellent outcome.

For a previously active older adult, expectations may be higher.

Pain Relief

Replacing the displaced femoral head stabilizes the fracture and usually provides substantial relief from the acute mechanical pain of the injury.

Patients still experience surgical pain during the first weeks.

That pain should gradually decrease as soft tissues heal.

Persistent groin pain months later deserves evaluation because the native acetabulum remains part of the joint.

Functional Recovery

Functional outcome is heavily influenced by pre-fracture mobility.

A healthy older patient who walked independently before injury has a better chance of regaining independent walking than a severely frail nursing-home resident.

This is one reason treatment studies must be interpreted carefully.

Differences between hemiarthroplasty and total hip replacement can partly reflect which patients were selected for each procedure.

Hemiarthroplasty vs Total Hip Arthroplasty Outcomes

Modern evidence suggests that total hip replacement can provide somewhat better function or quality of life in selected healthier, more active patients.

Recent evidence syntheses have also suggested lower revision rates with total hip replacement in some analyses.

However, hemiarthroplasty is usually a shorter procedure.

Major complication differences are not always consistent between studies.

This supports individualized treatment rather than a universal rule that one operation is superior for every displaced femoral neck fracture.

Mortality

Mortality after hip fracture is influenced substantially by age, frailty and medical disease.

The operation itself is only one part of the clinical picture.

Studies comparing hemiarthroplasty with total hip replacement generally do not demonstrate a large consistent mortality advantage attributable simply to replacing or preserving the acetabulum.

Multidisciplinary care, timely surgery and rehabilitation are therefore critically important.

Dislocation

A hemiarthroplasty can dislocate.

Dislocation occurs when the artificial femoral head leaves the natural acetabulum.

Surgical approach, implant position, soft-tissue tension, neurological disease, cognitive impairment and patient movement can influence risk.

A dislocation usually requires urgent reduction and sometimes further surgery if instability recurs.

Acetabular Erosion

Because the artificial head moves against natural acetabular cartilage, the socket can gradually wear.

This is known as acetabular erosion.

It is more clinically relevant in patients who survive many years and place greater demand on the joint.

Progressive groin pain can develop.

Severe symptomatic erosion can require conversion to total hip replacement.

Conversion to Total Hip Replacement

A failed or painful hemiarthroplasty can sometimes be converted to total hip arthroplasty.

During conversion, the surgeon resurfaces the acetabulum with a cup.

The existing femoral stem may be retained if it is well fixed and compatible with the planned reconstruction, or it may need revision.

Conversion is more complex than uncomplicated primary total hip replacement and carries meaningful complication risks.

This is one reason the original selection between hemiarthroplasty and total hip replacement deserves careful thought.

Implant Loosening

The stem can eventually become loose.

A cemented stem can loosen at the cement-bone interface.

A cementless stem can fail to integrate biologically.

Symptoms can include thigh pain and reduced function.

Radiographs help determine whether revision surgery is needed.

Periprosthetic Fracture

A fracture can occur around the femoral stem.

It may happen during surgery, particularly when bone is fragile, or later after another fall.

Treatment depends on the location of the fracture and whether the implant remains stable.

Some fractures are fixed with plates and cables, while others require revision to a longer stem.

Infection

Prosthetic joint infection is uncommon but serious.

Early infection may cause wound drainage, redness, fever or increasing pain.

Some infections can be treated with surgical washout and retention of the implant.

Others require staged removal and replacement.

Older frail adults can have subtle infection symptoms, so unexplained deterioration deserves assessment.

Unipolar vs Bipolar Outcomes

Major guideline evidence indicates that unipolar and bipolar hemiarthroplasty can produce similar overall outcomes in displaced femoral neck fractures.

Some individual studies report differences in specific measurements, but the evidence does not support telling every patient that a bipolar prosthesis is necessarily superior.

This is useful for international patients comparing quotations.

An expensive implant label should not replace a discussion of fixation, surgeon skill and appropriate patient selection.

Cemented Stem Outcomes

For older adults undergoing arthroplasty for femoral neck fracture, cemented stems are supported by strong guideline recommendations.

Benefits include reliable immediate fixation and a lower risk of some periprosthetic fractures compared with cementless fixation.

The trade-off is that cementation adds operative steps and requires attention to cardiovascular safety.

The safest result comes from combining appropriate fixation with a team prepared to manage the specific risks of the technique.

Long-Term Implant Survival

Hemiarthroplasty is often performed in an older population, so implant longevity must be interpreted within that context.

The prosthesis itself can remain mechanically functional for many years.

When later revision becomes necessary, causes can include acetabular erosion, loosening, infection, fracture or recurrent instability.

Younger and very active patients have more time to develop acetabular wear, which contributes to why total hip replacement may be selected for them initially.

The Femoral Stem

The femoral stem sits inside the upper femur.

It transfers load from the artificial head into the bone.

Stem geometry varies between manufacturers.

Some designs are intended for cemented fixation, some for cementless fixation and others have different versions.

The surgeon selects a design appropriate for the patient's femoral anatomy and bone quality.

Cemented Femoral Stems

A cemented stem achieves fixation using polymethylmethacrylate bone cement.

The cement fills the space between the implant and the prepared femoral canal.

This can be particularly useful when osteoporotic bone would not provide strong press-fit fixation.

Modern cementing technique includes appropriate canal preparation and controlled cement insertion.

Cementless Femoral Stems

Cementless stems have surfaces designed for bone attachment.

Initial stability comes from the fit between implant and bone.

Biological fixation develops over time.

These stems can work very well in appropriate bone, but osteoporotic fracture patients require careful selection because the femur can crack during insertion.

Unipolar Head

A unipolar head is designed to articulate directly with the natural acetabulum.

Modern modular systems allow different head diameters.

Correct head sizing helps the implant sit appropriately within the socket.

The term unipolar does not mean the implant is primitive or poorly engineered.

Bipolar Head

A bipolar component contains an internal articulation.

The smaller internal head can move inside the larger outer component.

The large outer surface then articulates with the acetabulum.

This creates two potential levels of motion.

The theoretical advantages do not consistently translate into large clinical differences, which is why both bipolar and unipolar designs remain accepted.

Modular Neck Length

The surgeon can select different head or neck lengths.

This helps adjust leg length and soft-tissue tension.

The objective is a stable hip with appropriate offset.

An excessively short construct can be unstable, while excessive length can create tightness or unwanted leg-length difference.

Head Diameter

The prosthetic outer head should match the patient's acetabulum.

The native femoral head is measured after removal.

Trial heads allow the surgeon to assess the fit directly.

Accurate sizing helps prevent abnormal pressure or instability.

Intraoperative Imaging

Routine fluoroscopy is not required for every hemiarthroplasty.

Some surgeons use imaging selectively depending on approach, anatomy or concern about component position.

Postoperative X-rays provide documentation of stem alignment, leg length and fracture status.

Technology should support the operation rather than create unnecessary complexity.

Robotics

Robotic assistance is much less central to standard hip hemiarthroplasty than to elective total hip replacement.

The main reasons are that hemiarthroplasty does not require placement of an acetabular cup and is usually performed urgently for a fracture.

There is therefore less need for the type of three-dimensional acetabular planning used in robotic total hip arthroplasty.

Good fracture care prioritizes timely surgery and reliable reconstruction rather than adding technology without a clear benefit.

Digital Templating

Preoperative digital templating can estimate stem size, neck length and femoral offset.

The plan serves as a guide rather than an absolute instruction.

Fracture displacement and magnification can affect radiographic measurements.

Final implant decisions are confirmed intraoperatively.

Dual-Mobility Total Hip Replacement Is Not Bipolar Hemiarthroplasty

These terms can sound similar but refer to different operations.

A bipolar hemiarthroplasty preserves the natural acetabulum and uses a bipolar femoral head.

A dual-mobility total hip replacement includes an implanted acetabular cup with a special mobile bearing system.

The two should not be presented interchangeably.

Implant Brand

The website can display the exact manufacturer and model when the hospital provides verified information.

Patients should receive implant documentation after surgery.

However, brand alone should not dominate decision-making.

Appropriate sizing, fixation technique and surgeon experience remain essential.