What are the components of knee replacement implants?

Each patient’s choice of design and materials for knee replacement prosthesis is unique. Metal is used to make the major implant components, which are commonly titanium or chrome-cobalt alloys. The implants are cemented in place or osseointegrated, which involves a porous metal stem extending into the tibia and the patient’s natural bone growing into it A plastic platform or spacer will be introduced between the tibial and femoral implant surfaces. Polyethylene is used to make the spacer.

 Metal alloys (cobalt-chromium) or metal-ceramic alloys make up the majority of femoral components (oxidized zirconium). Plastic makes up the patellar component (polyethylene). The tibial implant is similarly made of plastic (polyethylene). The following materials can be used to make the tibial tray component:

·         Chromium cobalt (metal alloy)

·         Metal titanium (metal alloy)

·         Polyethylene is a type of plastic (plastic)

How long does recovery after a bilateral knee replacement take?

Recovery after a bilateral knee replacement, where both knees are replaced at the same time, can be a lengthy process that requires patience and commitment. The timeline for recovery can vary from patient to patient, depending on factors such as age, overall health, and the extent of the knee damage prior to surgery.

During the recovery period, it's important for patients to follow their doctor's instructions carefully, which may include exercises to strengthen the muscles around the knee joint and maintain range of motion, as well as precautions to avoid bending or twisting the knee excessively. Patients should also maintain a healthy diet and lifestyle, and avoid smoking or drinking alcohol to support the healing process.

Generally, patients can expect to start feeling better and regaining some mobility within a few weeks of the surgery, but it can take up to six months or longer to achieve full recovery and return to normal activities. It's important to remember that recovery after a bilateral knee replacement is a gradual process; patients should be patient and persistent in their efforts to regain strength and mobility in their knees.