摘要
本实验通过体外力学测试(电测法),研究半环槽式外固定器固定新鲜人体胫骨条件下的应力场分布情况及固定钢针数目、针直径和骨断端加压固定对应力分布的影响。结果表明:(1)半环槽式外固定器对完整胫骨骨表面应力分布状况无显著影响,其应力遮挡率小(η=1.486%),能对骨断端均匀施加压力;(2)增多固定针数,增大针直径将显著增大应力遮挡率;(3)骨断端加压固定能显著降低应力遮挡率。
In our experiment, strain guage was used to investigate the stress distribution in half-ring sulcated external fixator on fresh human tibia and the influence of the number and diameter of stainless steel pin and the compression at fracture ends on stress distribution. The conclusions are as follows: half-ring Sulcated external fixator has no significant influence on the stress distribution on intact human tibia, the rate of stress protection caused by external skeletal fixation is very small (η=1.486) and half-ring sulcated external fixation can be used to result in equal compression at fracture ends; increasing the number and diameter of pin will significantly increase the rate of stress-protection; compression external fixation can not only improve the stiffness of external fixation, but also reduce the rate of stress protection significantly.
出处
《中华创伤杂志》
CAS
CSCD
北大核心
1992年第4期228-230,共3页
Chinese Journal of Trauma
关键词
骨外固定
生物力学
External skeletaI fixation Biomechanics
