摘要
目的旨在探讨高海拔对实验性骨折愈台生物力学性能的影响。方法分别在拉萨（海拔３６５８ｍ）和重庆（海拔７００～８００ｍ），采用当地家兔制成胫骨横形骨折模型，三角针内固定。术后２，４，６，８，１０，门周分别截取标本，行Ｘ线摄片。在ＷＤ－１０Ｅ电子万能试验机上行拉伸、扭转力学测试。结果骨痴的力学性能与Ｘ线照片骨痴密度相一致。４～１０周时，高原组的力学强度比平原组显著降低（Ｐ＜０．０５）。结论高海拔下实验性骨折愈合的生物力学强度比同时相点的平原组显著降低。
Objective To explore the effects of ho altitude on the biomechanic characteriho of bone fracture healing. Methods The Study was conducted in Lasa (altitude for 3658 m) and in Chongqing (altitude for 700 to 800 m) respectively. Transverse fractures weremade in the middle of the rabbit tibet and then were assessed by serial biomechanical testsperformed on a modified WD-10F electrical universal mat6rials taber and radiographic studiesmade at 2,4,6,8,10 and 12 weeks after operations. Results The callus formed at high altitudeshowed weak6r pfoperty of anti-stath and anti-rotation than that formed at lower altitude4 - 10 weekS after operations (P <0.05). Coudusions The biomechanics of callus formed in Lasaare weaker than thOSe formed in Chongqing at the same time points (P <0.05).
出处
《中华创伤杂志》
CAS
CSCD
北大核心
1999年第2期117-120,共4页
Chinese Journal of Trauma
