The categorization of people by social strata occurs in all societies, ranging from the complex, state-based societies to tribal and feudal societies, which are based upon socio-economic relations among classes of nobility and classes of peasants.
Knee replacement, also known as knee arthroplasty, is a surgical procedure to replace the weight-bearing surfaces of the knee joint to relieve pain and disability. It is most commonly performed for osteoarthritis,[1] and also for other knee diseases such as rheumatoid arthritis and psoriatic arthritis.
This policy describes the use of autologous chondrocyte implantation (ACI), also called autologous. chondrocyte transplantation (ACT), for the repair of defects in the articular cartilage of the knee. ACI may. slow the progression of tissue damage, thus delaying partial or total joint replacement surgery. The goal of.