摘要
目的 探讨垂直不稳定骨盆骨折 3种后环内固定方法及单纯固定后环和前后环同时固定稳定性的差异。方法 将 12具尸体骨盆随机分成 3组 ,每组 4具。 2组造成垂直不稳定骨盆骨折 ,1组分别采用骶骨棒、四孔方形钢板、松质骨螺钉单纯固定后环 ,另 1组上述方法固定后环同时用四孔钢板固定前环 ;第 3组作为完整骨盆 ,进行骨盆稳定性测试。结果 使用骶骨棒、四孔方形钢板、松质骨螺钉单纯固定后环时 ,骨盆的稳定性分别达完整骨盆的 17.8%、38.4%、48.2 % ;前后环同时固定时分别达 48.1%、5 6 .3%、6 5 .5 %。结论 单纯固定后环和前后环同时固定骨盆的稳定性均为松质骨螺钉最强 ,四孔方形钢板次之 ,骶骨棒最差 ;前后环同时固定骨盆稳定性明显高于单纯后环固定。
Objective\ To study the stability difference of three internal fixation methods with or without the anterior ring fixed to vertically unstable pelvic fractures. Methods\ Twelve emblamed cadaver pelvic specimens were randomly divided into three groups equally. Vertically unstable pelvic fractures were produced and the biomechanical characteristics of sacral bars, four hole square plates and cancellous screws with or without the pubic syphysis plate and intact pelvic specimens were tested and compared. Results\ The results of anxial compression test demonstrated that the stability of pelvis with three internal fixations were 17.8%, 38.4%, 48.2% of the intact pelvis when only fixing the posterior rings. When both the anterior and the posterior rings were fixed, the stability were 48.1%, 56.3%, 65.5%. Conclusion\ There was significant difference among the three internal fixation methods.The stability of pelvis with the anterior and the posterior rings to be fixed was better that with single posterior rings to be fixed.
出处
《中华实验外科杂志》
CAS
CSCD
北大核心
2000年第2期126-127,共2页
Chinese Journal of Experimental Surgery
关键词
骨盆骨折
垂直不稳定性
内固定
生物力学
Pelvic fracture, vertically unstable
\ Internal fixation
\ Biomechanics
