Figure 5.

(a, e) X-ray films immediately after static spacer insertion. (b, f) Nine weeks later, X-ray films showed bone loss. The upward displacement of the spacer relative to the original joint line is the bone loss of the femur, and the downward displacement of the spacer relative to the joint line is the bone loss of the tibia. (c) and (d) show the amount of bone loss in the distal femur on the anteroposterior X-ray films. (g) and (h) show the amount of bone loss in the distal femur on lateral X-ray films.