Bateman 型人工股関節の各 Component 間の動きについて

抄録

The Bateman Universal Proximal Femur is a unique dual bearing femoral head prosthesis. Primary articulation theoretically occurs at the inner bearing and secondary articulation occurs at the outer bearing. So we evaluated clinically the movement of the inner and outer bearing at abduction without bearing weight, using the A-P roentgenogram.
Results:
1. In most cases, the average degrees of the inner bearing motion is slightly more than that of the outer bearing motion, but the inner bearing motion is less than the outer bearing motion in the following cases: old patients, patients with clinically bad findings and short post-operative durations.
2. Outer head motion occurs at 10 degrees abduction under the theoretical limits of the inner bearing motion.