脊柱侧弯的生物力学研究ppt课件.pptVIP

第五节 脊柱侧弯Scoliosis的实用生物力学;2. 关节面;棘间韧带与脊椎竖立肌的肌腱与脊柱侧弯相关性不大； 黄韧带与脊柱侧弯有关，黄韧带及关节面限制着正常胸椎绕轴间的旋转。 ; 二、正常的运动;三、脊柱侧弯的生物力学定义;表现：;1. 生物力学的分类;四、治疗中的生物力学条件;1. 蠕变与驰缓;2. 脊柱侧弯矫正时轴向力与切向力比较;D;Harrington Rod;C;;Milwaukee brace;C;相对矫正弯矩M/FL;TL; 五、不同治疗方法中的生物力学问题;2. Milwaukee支具;卧床可以减少重力的影响，是Milwaukee支具的最有效矫正法之一;3. 局部矫正石膏背心;打石膏前将患儿置于专用的牵引支架上 ;4. 牵引;For the most extreme curves, pins are bored directly into the pelvis. A pelvic ring is connected to the halo with four heavy bars that can be individually extended with turnbuckles. This “halo-hoop” arrangement allows the largest acceptable distraction force without undue discomfort for the patient. It is also possible to correct pelvic tilt and rotation with this apparatus. After the initial lengthening is done, an operation can be performed with the patient still in the device. The young girl is recovering after such an operation. She has a tracheostoma to permit anaesthesia with the head immobilized in this way. ;5. Harrington 棒