胸腰椎横突副突和乳突的解剖学观测及其临床意义

Anatomic observation and clinical significance of mastoid and accessor processes in the transverse process of lumbar vertebra

目的：寻求椎弓根螺丝钉较便捷的进钉点。方法：观测２０具成年干燥Ｔ１１～Ｌ５共１４０块椎骨的横突副突、乳突，行穿针操作，椎骨Ｘ线拍片，用卡尺及角度测量仪测量。结果：腰椎横突副突、乳突及下关节突关节面外上缘连线，所形成的三角形顶角角分线中点与椎弓根长轴线相重合或极其接近，故此三角形的顶角角分线中点可作为椎弓根螺丝钉的进钉点。结论：通过１２例胸腰椎骨折病人临床应用证明是一种简捷、确实可行的椎弓根螺丝钉进钉点的定位方法。

bjective:To find a simple location method for pedicle screwentry point.Methods:To observe and measure the mastoid process and accessor process of transverse process in 140 vertebrae from T11 to L5 of 20 dried adult specimens.Results:The center of the vertex angular bisector of the triangles formed by the link lines between mastoid process,accessor process and the externalsuperior border of the inferior articlae can be used as the screwentry point.Conclusions:This location method is simple and ideal in thoracic and lumbar vertebral fracture fixation in 12 clinical patients.