The knee is commonly injured during sporting activities. Common areas of injury to the knee include damage to the articular cartilage, cartilage tears and injuries to the ligaments.

Osteoarthritis of the hip is a common condition affecting 20 in every 100 people over the age of 65. It commonly presents with pain in the hip and groin which is worsened by walking.

Total hip replacement surgery involves removing the arthritic ball and socket joint and replacing it with a prosthetic ball and socket. 60,000 hip replacements are performed in the UK each year; it is a very successful operation giving patients excellent pain relief and function