The knee is the largest joint of the human body and a crucial part of all the motor activities. It comprises of a junction of three bones (Femur, Tibia, and Patella) covered with articular cartilage. The joint has an inner lining called synovial membrane filled with a synovial fluid. This fluid acts as a shock absorber and avoids friction during movements.
These parts of the joints work in synchrony for all the motor functions. Disruption in this synchrony by a disease or any injury cause discomfort, pain, muscle weakness, and lower mobility.
Prolonged damage leads to a compromised life of the knee joint which might require knee replacement it is not preventable by conventional therapeutic interventions.
Knee replacement or knee arthroplasty is a surgical method in which the damaged knee joint is replaced with an implant or artificial joint.
Common causes of Knee replacement surgery:
I- Osteoarthritis (age-related wear and tear)
II- Rheumatoid arthritis (inflammatory arthritis)
III- Post-traumatic arthritis followed by a severe knee injury
When knee replacement surgery is recommended?
Knee replacement surgery is prescribed to people who have:
I- Severe knee pain to perform regular activities
II- Moderate to severe knee pain during resting
III- Chronic knee pain and moderate to severe swelling
IV- Cases where conventional therapy is not working
V- Severe to moderate knee deformity
Knee Replacement surgery is of two types: Total knee replacement in which the whole joint is replaced by an implant or artificial joint and Partial knee replacement in which a portion of the joint is replaced as the damage is not very extensive in the remaining parts of the joint.
Results of Knee replacement surgeries are quite satisfying though depends on the health status and the condition of the individual. The recovery period is not very extensive accompanied by assisted-physiotherapy and medications.