What Happens If Hip Resurfacing Fails? Revision Surgery Explained

Key Takeaways

• Pain, swelling, clicking, or a limp do not automatically mean hip resurfacing has failed; assessment may include X-rays, blood tests, metal-ion testing and specialised imaging.
• Some stable implants can be monitored, while fracture, infection, loosening, tissue damage or progressive loss of function may make revision more appropriate.
• Revision may replace only the femoral component or both components, depending on cup fixation, position, compatibility and the cause of failure.
• Recovery is often longer and less predictable than after primary hip replacement, particularly when bone loss, infection or muscle damage is present.

If you’ve had hip resurfacing and something now feels wrong — new pain, a bit of swelling, a persistent limp — it’s natural to worry about what “failure” actually means, and what happens next. Does this automatically mean another operation? Will it be a simple swap, or something considerably more involved? These are genuinely reasonable things to want clarity on.

Here’s the important thing to understand upfront: hip resurfacing doesn’t fail in one single way, and there isn’t one single answer to what happens next. A failed resurfacing is often converted to a total hip replacement, but the actual extent of that surgery depends heavily on why it failed in the first place — whether the problem is confined to the femoral side, whether it involves the acetabular cup, whether there’s metal-related tissue damage, infection, or fracture. This article walks through how failure is actually diagnosed, what the different revision pathways genuinely look like, and what recovery realistically involves.

The short answer

A failed hip resurfacing is commonly converted to a total hip replacement, but whether this involves just the femoral component or both components depends entirely on the specific reason for failure and whether the acetabular cup can safely be retained. This isn’t automatically a simple procedure just because resurfacing preserves your femoral bone — the actual complexity depends on the underlying cause, and outcomes are genuinely less predictable than after a straightforward first-time hip replacement.

What does “failed hip resurfacing” mean?

This phrase doesn’t describe one single event — it’s a general term covering several genuinely different problems.

• Mechanical failure, such as component loosening or fracture
• Biological failure, including infection or tissue reaction to metal particles
• A painful implant that remains mechanically stable, requiring careful diagnosis of the actual pain source
• Infection, which can occur early or, less commonly, years later
• Fracture, often related to trauma or the femoral neck
• Metal-related failure, involving elevated cobalt and chromium levels or tissue damage

What symptoms may indicate a problem?

Patients seeking more context about the original procedure may find it helpful to learn how hip resurfacing preserves the femoral head, how the components are positioned and why ongoing follow-up may include imaging or metal-ion monitoring. Understanding the procedure itself can make it easier to see why some problems can be monitored, while others may require partial or complete revision to a total hip replacement.

Certain symptoms are worth having assessed, though none of them alone confirms that your resurfacing has actually failed.

• New or increasing groin pain
• Buttock or thigh pain
• Swelling, or a noticeable lump, around the hip
• Clicking, particularly when accompanied by pain
• Reduced walking tolerance
• A new or worsening limp
• Weakness
• A sense of instability
• Loss of movement
• Pain even at rest
• Sudden pain following a fall
• Fever or wound-related symptoms

Does every painful resurfacing need revision?

No, genuinely not. Pain after hip resurfacing doesn’t automatically mean the implant has failed — it can come from several other sources entirely, including surrounding tendons, muscles, your lumbar spine, your knee, or another unrelated condition. This is precisely why proper specialist assessment matters before jumping to conclusions. In some cases, particularly where symptoms are mild, imaging looks reassuring, and function remains acceptable, careful monitoring rather than immediate revision may genuinely be the appropriate path forward.

Why can hip resurfacing fail?

Understanding the actual range of failure mechanisms helps explain why the response to “failure” varies so considerably.

Femoral-neck fracture

This can occur early in recovery or later, sometimes related to trauma, and often requires prompt conversion to a stemmed total hip replacement.

Femoral-component loosening

This can cause pain along with progressive changes visible on X-ray over time.

Cup loosening or malposition

This may require revision of the acetabular component, sometimes alongside bone reconstruction.

Adverse reaction to metal debris

This can cause pain, swelling, damage to surrounding muscle, a mass called a pseudotumour, or elevated blood metal-ion levels.

Infection

This may require debridement or a staged revision process, depending on timing and the specific organism involved.

Femoral-head collapse or osteonecrosis

This can compromise the bone that supports the resurfacing cap itself.

Component malposition and edge loading

This can increase wear and raise cobalt or chromium ion release.

Unexplained pain

This requires careful exclusion of implant, tendon, spinal, and infection-related causes before any conclusions are drawn.

How is a failed resurfacing investigated?

A thorough work-up genuinely draws on several sources of information together, rather than relying on any single test.

Clinical history

Reviewing when symptoms started, any trauma, your activity levels, your specific implant type, and any previous metal-ion results.

Examination

Assessing your gait, range of movement, abductor muscle strength, any swelling, leg length and tenderness.

Plain X-rays

Assessing component position, changes in the femoral neck, any signs of fracture, loosening or bone loss.

Blood tests

Including inflammatory markers and, where relevant, cobalt and chromium levels.

Cross-sectional imaging

Ultrasound or specialised metal-artefact-reduction MRI, and sometimes CT, to assess soft tissue and bone in more detail.

Joint aspiration

Used specifically when an infection or another intra-articular process is suspected.

What are metal ions and pseudotumours?

These terms come up often in resurfacing follow-up, and it’s worth understanding what they actually mean.

• Edge loading occurs when contact between the bearing surfaces concentrates at the rim rather than spreading evenly
• This can increase the release of cobalt and chromium into the surrounding tissue and the bloodstream
• A pseudotumour is a non-cancerous mass or tissue reaction that can develop in response to this metal debris
• These reactions can affect nearby muscles, tendons, and other soft tissue
• Ongoing monitoring helps track whether these changes are stable or progressing over time

When can the implant be monitored?

Observation, rather than immediate revision, may genuinely be reasonable when several favourable factors are present together.

• Your symptoms are minimal or stable
• Imaging confirms the components remain well fixed
• There’s no evidence of destructive tissue reaction
• Metal-ion results are stable over time, rather than steadily rising
• Infection has been genuinely excluded
• Your overall function remains acceptable

Monitoring in this situation typically involves periodic repeat examination, imaging and blood testing to confirm things remain stable.

When may revision be recommended?

Revision becomes more likely to be recommended where one or more of the following are present.

• A confirmed femoral-neck fracture
• Progressive component loosening
• Significant soft-tissue reaction to metal debris
• Rising metal-ion levels combined with abnormal imaging findings
• Confirmed infection
• Progressive bone loss
• Component migration on imaging
• Persistent, disabling pain genuinely attributable to the implant
• Significant loss of function
• Mechanical instability

What happens during revision surgery?

The general sequence follows a logical pattern, though the specific steps depend on what’s actually found once your surgeon assesses the joint directly.

• Anaesthesia and surgical exposure of the joint
• Fluid or tissue sampling where infection is a genuine consideration
• Removal of the femoral resurfacing cap
• Careful assessment of the acetabular cup’s fixation, position and condition
• Removal of any damaged or metal-affected tissue
• A decision on whether to retain or revise the acetabular cup
• Preparation of the femur to receive a conventional stem
• Insertion of the new implant components
• Testing of joint stability
• Wound closure

Can only the femoral component be revised?

Sometimes, yes — but this depends on specific criteria being met, not simply on whether resurfacing preserved your bone in general. A femoral-only conversion is possible when the acetabular cup is confirmed to be well fixed, correctly positioned, undamaged, and compatible with the femoral revision being planned. If these conditions aren’t met, both components typically need to be addressed.

When do both components need replacement?

Both-component revision becomes necessary in several genuine scenarios.

• The acetabular cup itself is loose
• The cup is malpositioned in a way that would compromise the revision
• There’s metal-related damage affecting the cup or surrounding tissue
• The existing cup is incompatible with the bearing surface being used for revision
• Infection is present
• Significant wear has occurred

It’s worth understanding that in one clinical review of failed resurfacing cases, both components were actually revised in the large majority of cases — this genuinely challenges the common assumption that only the femoral cap needs to come out.

How is infection treated?

Infection requires a genuinely distinct treatment pathway from mechanical problems.

• Debridement, meaning surgical cleaning of the joint, may be appropriate in selected acute cases where the implant can be retained
• A one-stage exchange, removing and replacing the implant in a single operation, may be used in some situations
• A two-stage exchange, involving removal of the implant, a period of antibiotic treatment with a temporary spacer, and later reimplantation, is used for more established infections
• Prolonged antimicrobial treatment, guided by identifying the specific organism involved, is a core part of the process

Is conversion the same as primary total hip replacement?

Not necessarily, and this is genuinely important to understand rather than assume. While resurfacing does preserve your femoral bone — an advantage worth acknowledging — conversion surgery can still involve considerably more than a straightforward first-time replacement.

• Previous scar tissue from the original surgery
• A capsule that may have been damaged or altered by the original procedure or subsequent problems
• The need to remove metal debris and any affected tissue
• Possible muscle or tendon injury related to the failure itself
• Bone loss, depending on the cause of failure
• Cup removal, if the acetabular component can’t be retained
• Fracture reconstruction, if that was the reason for failure

A study specifically examining resurfacing conversion found that patient-reported outcomes improved after revision, but on average remained below those typically reported after uncomplicated primary total hip replacement — a genuinely important, honest finding to be aware of.

What implants may be used?

Your surgeon has several implant options to choose from, depending on the specific situation.

• A standard primary femoral stem, where bone quality and reconstruction needs allow
• A specialised revision stem, for more complex bone loss
• A ceramic femoral head
• A polyethylene liner
• A dual-mobility component, offering additional stability in higher-risk situations
• A constrained liner, in selected cases of severe instability
• Cemented or cementless fixation, chosen based on your bone quality
• Bone graft or augmentation, where significant bone loss needs to be addressed

No single implant choice suits every failure pattern — the selection genuinely reflects what’s found and needed during your specific surgery.

Recovery timeline

Revision recovery generally takes longer than recovery from the original resurfacing and unfolds across several broad stages.

Hospital phase

Pain management, blood-clot prevention, early walking with assistance, postoperative imaging, and wound care.

First six weeks

Use of walking aids, weight-bearing restrictions where required based on your specific reconstruction, movement precautions, and managing swelling and fatigue with home support.

Six to 12 weeks

Progressive gait and strength work, increasing daily activity, assessment for driving and return to work, and reduced reliance on walking aids where safe to do so.

Three to six months

Further strength and endurance building, broader participation in household and work activities, low-impact exercise, and continued monitoring.

Six to 12 months

Continued functional gains, sport-specific rehabilitation where relevant, and the final stages of strength and mobility improvement for many patients.

When can you drive and return to work?

These depend on functional readiness rather than a fixed date, and revision patients often need a more individualised, sometimes slower, timeline than primary hip replacement patients.

• Driving readiness depends on medication use, which side was operated on, safe transfers, walking ability, and reliable emergency-braking control
• Desk work often returns before standing, driving or manual work
• Manual and physically demanding work generally requires more advanced healing and strength before a safe return

Can you return to sport?

Possibly, though this depends considerably on the reason for your revision, any bone reconstruction involved, soft-tissue health, and implant stability. Low-impact activity is often a more realistic initial goal than immediately returning to running, contact sport, or heavy lifting — your surgeon can help set expectations specific to your own revision.

What are the risks?

Revision surgery carries genuinely higher complication risks than primary hip replacement, and it’s worth understanding these clearly.

• Infection
• Dislocation
• Fracture
• Nerve injury
• Blood clots
• Further bone loss
• Persistent pain
• The possible need for further revision surgery down the track

What outcomes are realistic?

Revision surgery genuinely aims to reduce pain, remove failed or damaged components and tissue, restore stability, and improve your walking and overall function. However, it’s honest to say that outcomes can be less predictable than after a primary replacement, particularly where infection, significant metal-related tissue damage, substantial bone loss, or abductor muscle deficiency are involved. Revision can meaningfully improve your situation without necessarily producing an outcome identical to an uncomplicated first-time hip replacement.

Patient scenarios

These examples show how genuinely different the revision pathway can look depending on the underlying cause.

Femoral-neck fracture after resurfacing

This usually requires prompt conversion to a stemmed total hip replacement.

Pain with high metal ions and abnormal MRI

This may require revision of both components, along with removal of any damaged tissue.

Elevated ions without symptoms or tissue damage

This may be appropriate to continue monitoring under structured surveillance rather than proceeding straight to surgery.

Loose femoral component with a stable cup

This may be suitable for a femoral-only conversion, retaining the well-fixed acetabular component.

Malpositioned or loose cup

This will likely require acetabular revision as well as femoral conversion.

Infection

This needs culture-guided treatment and may require a staged revision approach.

Active younger patient

This patient needs a genuinely realistic discussion about their prospects for returning to impact activity after revision surgery.

Patient with abductor muscle damage

This patient may experience a slower recovery, a persistent limp, or a greater ongoing instability risk.

Patient with referred spinal pain

This patient may not actually improve from hip revision if the spine, rather than the implant, is the true source of their pain — highlighting why accurate diagnosis matters so much before proceeding.

Questions to ask the revision surgeon

These questions can help you understand your own specific situation clearly before proceeding.

• Why has my resurfacing actually failed?
• Has infection been genuinely excluded?
• Are my metal-ion levels concerning?
• What does my MRI actually show?
• Can my acetabular cup remain in place?
• Will both components need to be revised?
• Is there any muscle or bone damage involved?
• Which specific implants will be used?
• Will I need restricted weight bearing afterward?
• How long might my recovery genuinely take?
• What function can I realistically expect afterward?
• What is my risk of needing another revision in the future?

Australian care pathway

Understanding the practical Australian pathway can help you navigate this process.

• A GP referral generally supports a Medicare-rebated specialist consultation
• Seeking a surgeon with specific experience in revision hip surgery is genuinely worthwhile for this kind of procedure
• Bringing your original implant records and operation notes can be genuinely useful for planning
• The Australian Orthopaedic Association National Joint Replacement Registry may hold relevant implant history
• Both public and private revision pathways exist, depending on your circumstances
• Private health insurance and informed financial consent should be confirmed directly
• Metal-ion blood testing and MARS MRI access should be discussed with your specialist
• Infectious disease specialist involvement may be needed for a confirmed prosthetic-joint infection
• Physiotherapy and community rehabilitation support your recovery after revision
• Regional patients may need to travel for access to a complex revision specialist centre

Frequently Asked Questions (FAQs)

1. What happens when a hip resurfacing fails, and what are the most common reasons for failure?

It’s commonly converted to a total hip replacement, though your surgeon may revise only the femoral side or replace both components, depending on fixation, position, any metal-related damage, infection, and bone quality. Common causes include femoral-neck fracture, component loosening, infection, femoral-head collapse, adverse reaction to metal debris, component malposition, and persistent unexplained pain requiring further investigation.

2. Does hip pain mean the resurfacing has failed, and what does a femoral-neck fracture feel like?

No, not necessarily — pain can also arise from muscles, tendons, your spine, your knee, or another unrelated condition, so specialist assessment is genuinely needed before failure is diagnosed. A femoral-neck fracture commonly causes sudden pain and an inability to bear weight, often following trauma or an unexpected movement, and requires urgent assessment.

3. What is a pseudotumour, and which tests are used to investigate a potential problem?

It’s a non-cancerous mass or tissue reaction associated with metal wear debris that can damage nearby muscles, tendons or other soft tissue. Assessment commonly includes X-rays, blood tests, cobalt and chromium testing, and, where indicated, CT, ultrasound, MARS MRI and joint aspiration if infection is suspected — revision work-up genuinely requires more extensive investigation than assessing a primary hip replacement.

4. Does a high cobalt or chromium level mean I need surgery, and can the resurfacing cup stay in place?

Not automatically — the result is considered alongside your symptoms, the trend over time, implant position and imaging findings, rather than acting as a standalone trigger for surgery. The cup can sometimes be retained if it’s well fixed, well-positioned, undamaged, compatible with the planned revision, and not implicated in infection or metal-related failure.

5. Is only the femoral cap usually removed, and is conversion to total hip replacement easy?

Not necessarily — in one clinical review of failed resurfacing cases, both components were actually revised in the large majority of cases. Conversion may be more straightforward when bone and tissue are healthy, but it isn’t automatically equivalent to a first-time total replacement, and outcomes genuinely vary according to the specific reason for failure.

6. Is revision recovery longer than the original surgery, and can I return to running or impact sport afterward?

Often, yes — some patients require several weeks of restricted movement or weight bearing, and full recovery may take six to 12 months overall, generally longer than recovery from the original resurfacing. Returning to running or impact sport is possible in selected cases, but this depends on the type of revision performed, any bone reconstruction involved, soft-tissue health, and implant stability — this should be discussed individually with your surgeon.

7. Will revision relieve the pain, and can a revised hip fail again?

Many patients do experience meaningful improvement, but results are generally somewhat less predictable than after a primary total hip replacement, particularly where infection, metal-related damage, or significant bone loss were involved. Yes, a revised hip can fail again, though many patients require only the one revision — further surgery would generally only be needed if infection, instability, fracture or implant failure were to recur.

The Bottom Line

A failed hip resurfacing is not one single problem with one single fix — it’s a range of genuinely different scenarios, from a straightforward femoral-only conversion with a stable cup, through to a considerably more complex revision involving infection, fracture, or significant metal-related tissue damage. The outcome depends far less on the label “failed resurfacing” and far more on accurately identifying exactly what’s gone wrong before any surgery is planned.

If you’re experiencing symptoms after hip resurfacing, the most useful next step is a thorough assessment with a surgeon experienced in revision hip surgery — one who can properly investigate the actual cause, rather than assuming any pain automatically means your implant has failed, or that revision will necessarily be simple just because your femoral bone was preserved.