Ma C, Cai G, He R
Department of Pediatric Surgery, General Hospital of People's Liberation Army, Beijing 100853, China.
Zhonghua Wai Ke Za Zhi. 2000 Sep;38(9):711-2.
To observe the effect of V-shaped nitinol alloy implantation into the acetabular roof of puppies with acetabular dysplasia on acetabular dysplasia.
The puppies with acetabular dysplasia were divided randomly into two groups. Osteotomy was begun about 0.5 cm above the acetabulum, using a curved osteotome this cut must proceed between the medial wall of the ilium and medial wall of the acetabulum. The osteotomy does not have to be carried to the triradiate cartilage. When the osteotomy is completed, the superior aspect of the acetabulum can be hinged downward by curved osteotome. The V-shaped nitinol alloy was wedged securely in the osteotomy site. Roentgenogram was made 4 and 12 weeks after operation in all animals.
The inclination of the acetabular roof was redirected and the acetabular index was decreased. Microscopic study showed a marked proliferation of cartilaginous cells of the acetabular cartilage.
The V-shaped nitinol alloy implantation into the acetabular roof can correct the sloping acetabular roof, increase the coverage on the femoral head, and improve the growth of the acetabulum.
观察V形镍钛合金植入髋臼发育不良幼犬髋臼顶对髋臼发育不良的影响。
将髋臼发育不良的幼犬随机分为两组。在髋臼上方约0.5 cm处开始截骨，使用弯形骨刀，此切口必须在髂骨内侧壁和髋臼内侧壁之间进行。截骨不必延伸至三辐射软骨。截骨完成后，可用弯形骨刀将髋臼上缘向下铰接。将V形镍钛合金牢固地楔入截骨部位。所有动物在术后4周和12周进行X线检查。
髋臼顶倾斜度得到矫正，髋臼指数降低。显微镜研究显示髋臼软骨的软骨细胞明显增殖。
将V形镍钛合金植入髋臼顶可矫正倾斜的髋臼顶，增加股骨头覆盖，促进髋臼生长。
