Partial knee replacement - Medial Uni

This is an xray of a partial knee replacement. Specifically, this is a medial unicompartmental knee replacement. This fifty something year old man had pain localized to the medial aspect of his right and left knees. Carefully look at this xray and note that the lateral compartments (outside of each knee) has a well maintained joint space while the medial compartment of the untreated knee has bone on bone. The treated knee has a femoral component cemented into the femur(thigh bone), a tibial component cemented to the tibia (shin bone), and a ultra high molecular weight polyethylene component (xray invisible space) which is locked into the tibial tray. This procedure has provided the patient complete relief of his symptoms of knee arthritis. He went on to have his left knee partially replaced in the exact same manner and now functions normally without knee pain. He has returned to work and feels good. He was hospitalized only overnight in the hospital and was riding an exercycle within 10 days after surgery.