Types of Knee Replacement
In artificial knee replacement surgery, an artificial implant is implanted to replace the diseased knee. The worn surfaces of cartilage are replaced by a femoral component on the thigh bone and by a tibial component on the shin bone. A polyethylene insert is placed between both components and acts as a gliding surface. Implants must be made of very resistant material because they are exposed to high stresses. The femoral and tibial components are therefore made of metal and are hot-forged. The gliding component and any artificial knee cap which may be required (not illustrated) are made of polyethylene. All the materials have been specifically developed for medical purposes and display maximum tissue compatibility.
Types of Knee Replacements:
Unicompartmental Knee Replacement – In this surgery only the isolated damaged portion of the knee is replaced with an artificial knee implant. Other undamaged portion is left as it is and the ligament structures are also left intact. This allows early mobilization and return to regular activities. Also, conversion of this surgery to future total knee replacement, if required, is easy.
Total Knee Replacement Surgery (TKR) - In this surgery, entire damaged joint surface is replaced by an artificial implant. The implant is attached to the cut bony surfaces with antibiotic loaded bone cement. During the surgery, any prior deformities in the knee are fully corrected and neutral mechanical axis of the leg is achieved by various techniques.TKR is considered as ‘Gold Standard’ in the treatment of knee arthritis. It has a proven track record and survivorship of 15 years in > 95% of cases. It is a very safe surgery and more than 10 million surgeries are being performed each year throughout the world.
In knee replacement surgery, with improved implant design and newer techniques, we are able to achieve excellent result in terms of pain relief and implant survival consistently. Accelerated physiotherapy helps patients to get on their feet earlier and recover faster than ever before. Patients can now safely choose to undergo replacement surgery, expect desired outcome and finally, get rid of the knee pain forever.