Knee Replacement: Concerns and Recovery for RA Patients - Orthopedics

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Artificial knee joint


I am a patient with rheumatoid arthritis (RA) and underwent surgeries on my left and right knee joints in July and October of this year.
The left knee joint had more severe wear, and the doctor mentioned that a second-generation material was used, with a few additional components.
The right knee joint was less affected, so the doctor used first-generation materials, and he said that my walking has improved.
However, in the past few days, I've noticed that my right knee joint feels like it is making a grinding sound when I walk, similar to a machine that hasn't been lubricated (I can't quite describe it, but it feels like a grinding noise).
Does this indicate any abnormalities? Also, since the second-generation materials were used in the first surgery, does that mean my recovery will be worse in the future?

Yao Tiao Shu Nu, 30~39 year old female. Ask Date: 2005/01/23

Dr. Shi Guozheng reply Orthopedics


This phenomenon is normal because the hardness of artificial joints is greater than that of bone and cartilage, so it is inevitable that there will be some sounds during joint movement.
If there is no pain, it is not a concern.
The second set of materials will not affect joint function, and recovery will not be worse.

Reply Date: 2005/01/23

More Info


Knee replacement surgery, particularly for patients with rheumatoid arthritis (RA), raises several concerns regarding recovery and potential complications. Your experience with both left and right knee replacements, especially with the left knee having more severe wear and requiring a second-use implant, is not uncommon. It’s important to address your concerns about the “gritty” sensation and sound you’re experiencing in your right knee, as well as the implications of using second-hand materials in your surgeries.

Firstly, the sensation you describe in your right knee—similar to a lack of lubrication—could indicate several possibilities. It might be related to the mechanics of the artificial joint, such as the alignment or positioning of the implant. Sometimes, patients report noises like clicking or grinding, which can be benign, especially if there is no accompanying pain or swelling. However, if you are experiencing discomfort, swelling, or a significant change in function, it is crucial to consult your orthopedic surgeon. They may recommend imaging studies, such as X-rays or an MRI, to assess the integrity of the implant and surrounding structures.

Regarding the use of second-hand materials in your left knee replacement, it’s essential to understand that the longevity and effectiveness of implants can vary. While using a second-use implant may raise concerns about durability and recovery, many factors influence the outcome, including the surgical technique, the patient’s overall health, and adherence to rehabilitation protocols. Your orthopedic surgeon would have evaluated the risks and benefits before proceeding with this option. It’s also worth noting that advancements in implant technology have improved the performance of second-use materials, making them a viable option in certain cases.

Recovery from knee replacement surgery, particularly for RA patients, can be more complex due to the underlying condition. RA can affect the healing process and may lead to complications such as joint stiffness or inflammation. It’s crucial to engage in a structured rehabilitation program post-surgery to optimize recovery. This typically includes physical therapy focused on restoring range of motion, strength, and function. Your physical therapist can tailor a program to your specific needs, considering your RA and the status of your knee replacements.

In terms of long-term outcomes, RA patients may face a higher risk of complications after joint replacement surgery, including infection, stiffness, and the need for revision surgery. Regular follow-ups with your orthopedic surgeon are vital to monitor the condition of your implants and manage any potential issues early on.

Lastly, maintaining a healthy lifestyle, including a balanced diet and appropriate exercise, can significantly impact your recovery and overall joint health. It’s also essential to manage your RA effectively with your rheumatologist to minimize its impact on your joints.

In summary, while the sensation you’re experiencing in your right knee could be concerning, it’s essential to consult with your orthopedic surgeon for a thorough evaluation. The use of second-hand materials in your left knee replacement does not necessarily predict a poor outcome, but ongoing monitoring and rehabilitation are crucial for your recovery. Your proactive approach to understanding your condition and seeking answers is commendable, and I encourage you to continue advocating for your health as you navigate your recovery journey.

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