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.
Recovery is quicker than a total knee replacement; usually @6 weeks. After surgery you need to take an antibiotic before any dental or GI procedures and avoid high impact activities. A partial knee replacement involves a resurfacing of one of three parts of the knee (medial, lateral , or patella-femoral compartments). There may be some lateral knee numbness after surgery. Recovery is quicker than a total knee replacement; usually @6 weeks.