Patellofemoral Replacement

What is a patellofemoral knee replacement?

Patellofemoral knee replacement is a surgical procedure that involves replacing only the damaged portion of the knee where the patella (kneecap) meets the femur (thigh bone). It is a type of partial knee replacement focused on the front part of the knee joint.

Who is a candidate for patellofemoral  replacement?

This procedure is typically recommended for patients with arthritis or cartilage damage localized to the patellofemoral compartment of the knee, usually caused by:

• Osteoarthritis
• Traumatic injuries
• Wear and tear of the knee joint

Candidates often have:

• Good overall knee function
• Intact ligaments and no significant deformity

How is patellofemoral  replacement different from other types of knee replacement?

Patellofemoral knee replacement differs from total and other partial knee replacements in that:

• Only the patellofemoral joint (where the kneecap meets the femur) is replaced
• The rest of the knee joint remains intact
• The surgery requires a smaller incision and preserves more bone and tissue

What are the benefits of patellofemoral  replacement?

• Smaller incision and less invasive than total knee replacement
• Faster recovery and less postoperative pain
• Retention of more natural knee movement
• Reduced risk of complications compared to total knee replacement
• It can delay or avoid the need for total knee replacement in some cases

What are the risks of patellofemoral  replacement?

While the surgery has a high success rate, risks include:

• Infection
• Blood clots
• Implant failure or loosening
• Persistent pain or stiffness
• Limited ability to return to high-impact activities

How long does a patellofemoral  replacement last?

The lifespan of the implant varies, but on average, it lasts 10–15 years. Avoiding high-impact activities can help extend its longevity.

Is patellofemoral  replacement right for me?

Patellofemoral knee replacement is ideal for patients with isolated damage to the patellofemoral joint. If you have arthritis or damage in multiple parts of the knee, a different form of knee replacement may be more appropriate.

What is recovery like after patellofemoral  replacement?

Recovery is generally faster than total knee replacement, with many patients returning to normal activities within 6–8 weeks. Full recovery, including muscle strength and function, may take several months.

Will I need physical therapy after surgery?

Yes, physical therapy is essential for restoring knee function, strength, and flexibility. Therapy typically begins soon after surgery and continues for several months.

How long will I be in the hospital?

Most patients stay in the hospital for 1–2 days after surgery. Some patients may go home the same day, depending on the individual recovery.

Can I return to sports or exercise after patellofemoral  replacement?

Low-impact activities like walking, swimming, and cycling are generally recommended. High-impact activities (e.g., running, jumping) are usually discouraged to protect the implant and preserve joint longevity.

Is there any pain after surgery?

Pain is generally less severe after patellofemoral knee replacement compared to total knee replacement. Most patients experience manageable discomfort during recovery, which can be controlled with medications.

What are the chances of needing a total knee replacement in the future?

If arthritis or damage progresses in other areas of the knee, a total knee replacement may eventually be needed. However, a patellofemoral replacement can delay—or even prevent—the need for a total knee replacement in some patients. If a total knee replacement does become necessary, converting from a patellofemoral replacement is usually a straightforward procedure and is typically less complex than revising a worn or painful total knee replacement.

What type of anesthesia is used during the surgery?

Patellofemoral knee replacement is typically done under regional anesthesia (spinal) combined with sedation, though general anesthesia can also be used depending on your surgeon's approach and your health.

What is the success rate of patellofemoral  replacement?

In carefully selected patients, patellofemoral knee replacement has a high success rate, with most patients experiencing significant pain relief and improved function. Studies show that over 90% of patients report satisfaction with their outcomes, particularly if they have isolated damage to the patellofemoral compartment. According to the UK national joint registry, the 10-year survival rate for Patellofemoral joint replacement is approximately 76.5%

Why Choose Mr Tumia to Do My Surgery?

Mr Tumia is a senior orthopaedic surgeon with over 30 years of experience in partial and total knee replacement surgery. Mr Tumia has performed a high volume of partial and total knee replacements, consistently achieving excellent outcomes and patient satisfaction. He is dedicated to helping his patients return to their preferred level of activity and enjoy an improved quality of life.

Want to Learn More?

If you’re struggling with knee pain or limited mobility, speak to your GP about your options—including the potential for total or partial knee replacement surgery.

To book an appointment with Mr Tumia: