There were 12 lesions, including 4 acetabula,1 ramus,2 proximal ends of tibia,3 talus,1 collu m scapulae,and 1 caput ossis femoris.

• 12例病变部位为髋臼附近 4例 ,胫骨上端 2例 ,距骨 3例 ,内踝、肩胛盂和股骨头各 1例。