Aebi M, Etter C, Kehl T, Thalgott J
Department of Orthopaedic Surgery, University of Berne, Inselspital, Switzerland.
Spine (Phila Pa 1976). 1987 Jul-Aug;12(6):544-51. doi: 10.1097/00007632-198707000-00007.
Since 1984, 30 patients with burst fractures of the lower thoracic and lumbar spine were treated with AO internal spinal skeletal fixation system. All patients in this series had a minimum follow-up of 12 months. This new instrumentation is a posterior intrapedicular system developed by Dick in 1982. It allows stable fixation that is limited only to adjacent spinal segments. The internal fixator permits reduction in all three planes. Independently, it is possible to add distraction or compression to the involved segments. It also is able to reduce effectively the "middle column" which is thought to be accomplished by "ligamentotaxis." In this series there were 16 neurologically intact patients and 14 with partial or complete neurologic injury. There were two minor instrumentation loosenings early in the series. Most patients in this series had a near-anatomic reduction of all three columns in the involved segment. It was also possible to re-establish the normal lordosis of the lumbar spine. The device provided sufficient rigid fixation for rapid postoperative mobilization in a light external orthosis.
自1984年以来，30例下胸椎和腰椎爆裂骨折患者接受了AO脊柱内骨骼固定系统治疗。本系列所有患者的最短随访时间为12个月。这种新器械是迪克于1982年研发的后路椎弓根内固定系统。它能实现稳定固定，且仅局限于相邻脊柱节段。该内固定器可在三个平面上进行复位。单独地，能够对受累节段施加撑开或加压。它还能有效复位被认为是通过“韧带整复法”实现的“中柱”。本系列中有16例神经功能完好的患者和14例有部分或完全神经损伤的患者。本系列早期有2例器械轻度松动。本系列大多数患者受累节段的所有三柱均实现了近乎解剖复位。恢复腰椎正常前凸也是可行的。该装置提供了足够的坚强固定，以便术后在轻便的外部矫形器辅助下快速活动。
