Salter骨盆截骨手术中髋臼骨块空间移位的模拟与分析

目的 探讨Salter骨盆截骨手术中髋臼骨块空间移位情况.方法 通过计算机工作站,分别采用两种骨块空间位移方式,对32例单侧髋脱位患儿术前进行Salter骨盆截骨手术模拟（模拟手术组Ⅰ和模拟手术组Ⅱ）,分别测量各组髋臼指数和髋臼后方坐骨支至骶骨的空间距离,以32例术前组患儿的相对正常髋为相对对照组.结果 模拟手术组之间髋臼指数无明显差异（模拟手术组Ⅰ为13.45±2.45,模拟手术组Ⅱ为14.16±3.98,t=0.86,P＞0.05）,髋臼后方坐骨支至骶骨的空间距离有统计学差异（模拟手术组Ⅰ为19.72±3.34,模拟手术组Ⅱ为28.43±4.87,t=8.34,P＜0.001）;与相对对照组对比,两项指标均有统计学意义.结论 两种骨块空间位移方式,髋臼指数均能获得改善;但如果首先前移髋臼骨片,不仅能获得良好的矫形,而且能够减少髋臼后方软组织的阻挡.

The simulation and analysis of the space moving bebind the acetabulum in Salter pelvic osteotomy

Objective To study the spaee moving of the acetabulum fragment in Salter pelvic osteotomy. Methods To simulate Salter pelvic osteotomy in 32 cases of unilateral hip dislocation before surgery surgical through the computer workstations,and two ways were used to simulate the bone fragments spatial displacement respectively. （Data were recorded as simulation surgery group I and simulation surgery group Ⅱ ）.The relative normal hip of patients was used as the relative contrast group. Acetabular index and the space distance between the isehium branch and the sacrum of acetabular rear were measured in the computer workstations. Results There was no significant diffence in aeetabular index between simulation groups, （simulation surgery group I 13.45 ± 2.45, simulation surgery group Ⅱ 14.16 ± 3.98, t = 0.86, P 〉 0.05）, but there was signifieant difference in the space distance of the ischium branch to sacrum of aeetabular rear （simulation surgery group I 19.72 ± 3.34, simulation surgery group Ⅱ 28.43 ± 4.87, t = 8.34, P 〈 0.001）. Comparisons between the experimental group and the relative contrast group, both of the two tagets aforementioned were significant different. Conclusions Both two modes of bone fragments spatial displacement in Salter pelvic osteotomy improved aeetabular index in DDH; However, if forward acetabular bone-chip firstly, not only to get a good orthopedic, and can reduce the block of the soft tissue bebind the acetabulum from happening.