Our Summary

This research paper describes a surgical technique that involves resurfacing a part of the knee joint (the trochlea) using a special kind of implant called an inlay prosthesis. This procedure is recommended for patients who have specific types of knee damage or disease, and have not found relief from less invasive treatments.

The surgery involves making a cut in the knee, measuring the shape of the trochlea, and then creating a bed for the implant by removing the damaged cartilage. The prosthesis is then carefully placed into this bed and secured with a screw.

After the operation, patients are advised to start gentle knee movement exercises the next day. They are also allowed to put a limited amount of weight on the knee during the first couple weeks after surgery, increasing gradually over time.

The researchers studied 29 patients who had this surgery and found that, after two years, they showed significant improvements in pain and function. The study also suggests that this inlay technique may be better than other types of knee replacement surgery because it preserves more of the original joint and avoids overstuffing, which can cause problems.

FAQs

  1. Who are the ideal candidates for the inlay prosthesis knee replacement surgery?
  2. What are the post-operative care steps that need to be followed after undergoing inlay prosthesis knee replacement surgery?
  3. How does the inlay prosthesis knee replacement technique compare to other types of knee replacement surgeries?

Doctor’s Tip

It is important for patients undergoing knee replacement surgery to follow their doctor’s post-operative instructions carefully, including doing prescribed exercises and gradually increasing weight-bearing on the knee. This will help ensure a successful recovery and optimal outcomes.

Suitable For

Patients who may be recommended for this type of knee replacement surgery include those with:

  1. Severe knee pain that limits daily activities and is not relieved by medications, injections, or physical therapy.
  2. Osteoarthritis or rheumatoid arthritis that has severely damaged the knee joint.
  3. Previous knee surgeries that have not been successful in relieving pain or improving function.
  4. Traumatic injuries to the knee, such as fractures or ligament tears, that have caused significant damage to the joint.
  5. Severe deformities in the knee joint, such as bow-legged or knock-kneed alignment, that cannot be corrected with other treatments.
  6. Patients who are relatively young and active, but are experiencing significant knee pain and dysfunction that is impacting their quality of life.

It is important for patients to undergo a thorough evaluation by a healthcare provider to determine if they are a suitable candidate for knee replacement surgery and to discuss the potential risks and benefits of the procedure. Additionally, patients should be committed to following a rehabilitation program after surgery to maximize their recovery and long-term outcomes.

Timeline

Before knee replacement:

  1. Patient experiences chronic knee pain, stiffness, and swelling.
  2. Patient tries non-surgical treatments such as physical therapy, medication, and injections.
  3. Patient undergoes imaging tests such as X-rays and MRI to assess the extent of knee damage.
  4. Patient consults with an orthopedic surgeon to discuss the option of knee replacement surgery.

After knee replacement:

  1. Patient undergoes pre-surgical preparation such as blood tests, medical history review, and anesthesia consultation.
  2. Patient undergoes knee replacement surgery, where damaged parts of the knee are removed and replaced with prosthetic components.
  3. Patient is monitored closely in the hospital for a few days post-surgery for pain management and early mobility.
  4. Patient begins physical therapy and rehabilitation to regain strength, flexibility, and mobility in the knee.
  5. Patient gradually returns to normal activities and experiences improved pain relief and function in the knee over time.

What to Ask Your Doctor

  1. What specific type of knee damage or disease do I have that makes me a candidate for this inlay prosthesis surgery?
  2. How long does the surgery typically take, and what is the recovery process like?
  3. Are there any potential risks or complications associated with this procedure that I should be aware of?
  4. How long can I expect the inlay prosthesis to last, and what follow-up care will be needed?
  5. Will I need physical therapy after the surgery, and if so, how long will it be necessary?
  6. How soon after the surgery can I expect to see improvements in pain and function in my knee?
  7. Are there any restrictions or limitations on activities that I should be aware of after the surgery?
  8. How does this inlay prosthesis surgery compare to other types of knee replacement surgeries in terms of outcomes and longevity?
  9. Are there any lifestyle changes or modifications I should consider making to help ensure the success of the surgery?
  10. Can you provide me with any additional resources or information about this specific surgical technique and what to expect before, during, and after the procedure?

Reference

Authors: Cotic M, Forkel P, Imhoff AB. Journal: Oper Orthop Traumatol. 2017 Feb;29(1):40-50. doi: 10.1007/s00064-016-0477-1. Epub 2017 Jan 30. PMID: 28138717