A patella fracture is a break (fracture) in the kneecap (patella). About 1% of all fractures occur are patella fractures. This fracture is usually treated surgically, using tension wiring (figure-of-eight tension band) and Kirschner wires. This is necessary because of the strong traction forces exerted by the quadriceps femoris muscle, causing fracture dislocation and impairing fracture healing. After the procedure, prophylactic low-molecular-weight heparin (LMWH) is necessary to prevent thrombosis. Initial postoperative physiotherapy consists of exercises in a motorized splint. Then partial weight-bearing, and later full weight-bearing exercises are performed.