Revision Knee Replacement2026-04-25T06:37:55+00:00

Revision Knee Replacement

What is Revision Knee Replacement?

Revision knee replacement is the procedure performed when a previous knee replacement has failed. It is a technically demanding operation that requires extensive preoperative planning, specialised implants and surgical expertise. While more complex than primary knee replacement, revision surgery can provide substantial pain relief and improvement in function when the cause of failure is correctly identified and addressed.

Dr Razvan Stoita has specific training and experience in revision knee replacement, including complex cases involving bone loss, instability, infection and previous failed revisions.

Who is suitable?

Revision knee replacement is considered when the primary implant has failed due to one or more of the following reasons:

  • Aseptic loosening: loosening of the femoral or tibial component from the underlying bone, causing pain and instability.

  • Polyethylene wear and osteolysis: wear of the polyethylene bearing producing particles that trigger bone resorption around the implant.

  • Periprosthetic infection: deep infection involving the implant, which may require single-stage or two-stage revision with extensive debridement.

  • Instability: symptomatic ligament imbalance or mid-flexion instability causing giving way and functional limitation.

  • Stiffness: restricted range of motion that has failed non-operative management and arthroscopic release.

  • Malalignment or malrotation: incorrectly positioned components causing pain, instability, stiffness or accelerated wear.

  • Periprosthetic fracture: fracture of the femur, tibia or patella around the implant.

  • Extensor mechanism failure: rupture of the quadriceps or patellar tendon, or patellar fracture.

  • Unexplained persistent pain: after thorough investigation has excluded all other causes.

What to expect
Your Treatment Journey

1
Consultation & assessment

Dr Stoita will review your symptoms, activity goals, and any existing imaging. A detailed clinical examination is performed to confirm the diagnosis and discuss whether this procedure is the right option for you.

Initial visit
2
Imaging & diagnosis

X-rays, MRI or other imaging may be used to confirm the diagnosis and assess the extent of the condition. In complex cases, 3D computerised modelling may be used to assist with surgical planning.

Pre-surgery
3
Surgery

The procedure is performed under anaesthesia using the most appropriate surgical technique for your condition. Dr Stoita uses minimally invasive approaches where possible to reduce recovery time and optimise outcomes.

Day of procedure
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After surgery
Your Recovery Journey
Recovery after revision knee replacement is generally slower than after primary replacement and requires a carefully structured rehabilitation program.
Days 1–5 (hospital stay)

Most patients stay in hospital for 3–5 days, and sometimes longer for complex revisions or infection revision surgery. Weight bearing status is determined based on bone loss management and fixation. Full weight bearing is often possible from day one. Early mobilisation begins with physiotherapy support.

Weeks 1–5

Protected weight bearing for 6 weeks may be required when structural bone graft has been used. A dedicated physiotherapy program is critical during this phase to begin restoring range of motion. Extensor mechanism reconstructions require a more cautious range of motion protocol.

Week 6

Transition off protected weight bearing where applicable. Physiotherapy continues with progressive strengthening and range of motion work.

Months 3–12

Continued improvement in strength, function and range of motion. Most activities of daily living are progressively resumed during this period. Achieving a functional range of motion remains a key goal and requires ongoing commitment to physiotherapy.

Months 12–18

Most patients continue to improve for 12–18 months after revision surgery. Recovery is slower than after primary replacement and realistic expectations are important. Most patients experience substantial pain relief and significantly improved function compared to the failed state.

It is important to note revision surgery is best performed by surgeons with specific expertise using a multidisciplinary approach. Dr Stoita is a part of a complex clinic at Macquarie University Hospital.

Frequently Asked Questions (FAQ)

What is the difference between total and partial knee replacement?2026-04-24T14:35:37+00:00

In a total knee replacement, the entire knee joint surface is replaced – the ends of the femur (thigh bone), tibia (shin bone), and usually the underside of the kneecap are all resurfaced with artificial components. In a partial knee replacement (PKR), also called unicompartmental knee replacement, only the damaged compartment of the knee is replaced, leaving healthy bone, cartilage, and ligaments intact.

Do I need knee surgery?2026-04-18T02:14:17+00:00

Diagnosis involves understanding a history of your symptoms, examining your knee, and using imaging such as X-rays to assess cartilage wear and joint alignment. In some cases, additional scans such as CT or MRI scans may be required to either exclude other conditions or quantify the degree of arthritis.Some patients develop patellofemoral pain syndrome in the absence of any bone, joint or soft tissue abnormalities. However, most patients with the syndrome present with one or more abnormalities related to bone anatomy, joint anatomy and/or soft tissue.

Who is at risk of knee arthritis?2026-04-18T02:11:38+00:00

Although knee arthritis can affect anyone, there are several factors that can increase the risk of arthritis:

  • Genetic predisposition
  • Previous knee injury or surgery
  • Other joint conditions such as rheumatoid arthritis or gout
  • Occupations involving heavy manual work
  • Age (over 40)
  • Female gender
  • Being overweight or obese
  • Participation in high impact activities or sports (e.g. running, soccer or rugby)
How can I tell if I have knee arthritis?2026-04-18T02:07:43+00:00

You may exhibit the following symptoms:

  • Pain, swelling and stiffness in the knee
  • A creaking or grinding sensation with movement
  • Difficulty walking, climbing stairs, squatting or kneeling
  • Feeling of instability or knee feels like it is giving away
  • Catching or locking of the knee
What causes knee arthritis?2026-04-18T02:08:07+00:00

Knee arthritis typically develops as a result of progressive cartilage wear within the joint. This process may occur naturally with age or be accelerated by factors such as previous injury, altered joint alignment, or increased mechanical load.

In some cases, inflammatory conditions such as rheumatoid arthritis can also contribute to joint degeneration.

Not sure what the right next step is?

“I take a personalised approach to understanding your knee and guiding you toward the right treatment for your lifestyle. Book your consultation to explore your options”.

Dr Razvan Stoita



Alternatively, contact (02) 8005 5111.

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