Fig. 5

a–c (a) Longitudinal split fracture of the femoral component of the articulating spacer (arrow) found intraoperatively. (b) After removal of the femoral spacer component, a dense layer of fibrous tissue surrounding the femoral bony surface was found, particularly in the medial femoral condyle (white arrow). The tibial component of the articulating spacer was intact. (c) After meticulous debridement of the soft tissue and bone, considerable amounts of bone loss can be found in the medial femoral condyle (large circle) as compared with the lateral femoral condyle (small circle)