Total Knee Replacement Surgery in Dombivli In the knee replacement surgery or Knee Arthroplasty, damaged knee joint is replaced with artificial implants. In knee joint lower end of femur (thighbone) meets the upper side of the tibia (lower leg bone) with kneecap (patella). In knee replacement surgery, the ending part of the bones of knee joint is cut precisely so that implants can be fitted accurately; the damaged cartilages and anterior cruciate ligament (ACL) are removed. New specifically shaped artificial implants made of metal, plastic and polymer is fitted and fixed using polymethylmethacrylate (PMMA) cement or cement less techniques may be used. Knee replacement surgery can be either total knee replacement in which surfaces of all bones of joint are replaced or partial knee replacement in which the damaged part of the knee joint is replaced. The implants work similar to natural knee joints and they may also wear out with the time specially when the implantation is carried out in young patients.