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It is estimated that about 7 million individuals in the United States US have functional limitations due to osteoarthritis OA and expected to increase about to 11 million by 2020 Knee OA is one of the most common type it that cause disabilities in older populations White et al 2011 OA of the knees is common in the geriatric population It is the most common type of arthritis that affecting millions of people in the United States Its systemic causes include genetic diet abnormality estrogen use and decreased bone density Biomechanical factors include obesity muscle weakness and joint laxity Felson et al 2000 Knee osteoarthritis also caused by repetitive use of knee bending during jobs of heavy labor Felson 1988 It is observed that the risk of knee OA was significantly greater in people who do more squatting during their jobs and repeated knee bending is therefore suggested one of the risk factors Cooper McAlindon Coggon Egger Dieppe 1994 The knee joint is a hinge joint between the lower end of the femur and the upper end of tibia When the surfaces of those bones develop osteophytes due to the remodeling mechanism of bones the normal function will be affected and develop pain during activities Martin 2012 According to the annual statistics the total knee arthroplasty TKA has increased in US over the last decade and about 360000 procedures were done in 2003 According to current statistics TKA will increase 673 by 2030 This increase will be due to offer to more physically active and to people who have longer life expectancy Nyland Kanouse Krupp Caborn Jacob 2011 Total knee arthroplasty is one of the most adopted options to relieve pain and restore normal function of the arthritis affected knee Knee arthroplasty is commonly considered one of the final options when other options like weight loss oral medicine and injections fails to relieve the pain Total knee arthroplasty is a surgical
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