A partial knee replacement is a surgery to replace part of a damaged knee rather than the whole knee, according to National Institutes of HealthOff Site Icon (NIH).
The surgery replaces either the inside part of the knee, the outside part of the knee, or the kneecap.
During the surgery, your damaged tissue and bone is removed and those pieces are replaced with either metal or plastic prosthetic pieces.
Talk with your doctor for more information about a partial knee replacement.
Partial knee replacement is a surgical treatment option that replaces (or resurfaces) only the damaged portion of the knee while conserving knee ligaments and unaffected cartilage. “Patients with unicompartmental knee arthritis have cartilage degeneration in only one section or compartment of the knee.
In a partial knee replacement, only the damaged compartment is replaced with a new metal and plastic surface. The healthy cartilage and bone in the rest of the knee is left alone. Usually partial knee replacements use implants placed between the end of the thigh bone and the top of the shin bone.