Panjabi M M, Duranceau J S, Oxland T R, Bowen C E
Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut.
Spine (Phila Pa 1976). 1989 Oct;14(10):1111-5. doi: 10.1097/00007632-198910000-00014.
Spinal injuries due to high-speed trauma are significant problems. The method of treatment depends on the stability determination of the injured spine. Young pig spines were injured at high speed to produce clinically relevant fractures and dislocations. The injuries were produced by dropping a mass onto the superior vertebra and causing three major types of trauma: flexion-compression, extension-compression, and pure compression. The multidirectional instability of each spine was measured before and after trauma by applying pure moments to the three vertebrae segments. Lateral radiographs were taken of each intact and injured spine. Flexion trauma produced the greatest instabilities in flexion and extension, while extension trauma produced the greatest instabilities in axial rotation and lateral bending. Lateral radiographs were found to be inaccurate predictors of spinal instability.
高速创伤导致的脊柱损伤是重大问题。治疗方法取决于对受伤脊柱稳定性的判定。对幼猪脊柱进行高速损伤以造成具有临床相关性的骨折和脱位。通过将重物落于上位椎体上造成三种主要类型的创伤：屈曲压缩、伸展压缩和单纯压缩。在创伤前后，通过对三个椎骨节段施加纯力矩来测量每个脊柱的多方向不稳定性。对每个完整和受伤的脊柱拍摄侧位X线片。屈曲创伤在屈曲和伸展时产生最大的不稳定性，而伸展创伤在轴向旋转和侧方弯曲时产生最大的不稳定性。结果发现，侧位X线片并不是脊柱不稳定的准确预测指标。
