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.
What is a Simultaneous Bilateral Total Knee Replacement? A Simultaneous staged procedure means to replace both knees on the same day, under one anesthesia. This takes place in the same surgical event, within one hospital stay and is followed by a single rehabilitation period.