Knee replacement surgery also known as knee arthroplasty is procedure to replace the weight-bearing surfaces of the knee joint to relieve the pain and disability of osteoarthritis. It may be performed for other knee diseases such as rheumatoid arthritis and psoriatic arthritis.
In the younger population, your knee meniscus is usually torn traumatically, by a twisting on a slightly flexed knee. The traumatic type of meniscal injuries are most often sports-related. The meniscus can be torn anterior to posterior, radially (parrot beak), or can have a bucket handle appearance.