Panjabi M M, Abumi K, Duranceau J, Crisco J J
Department of Orthopaedics and Rehabilitation, Yale University, School of Medicine, New Haven, Connecticut.
Spine (Phila Pa 1976). 1988 Oct;13(10):1135-40. doi: 10.1097/00007632-198810000-00014.
The three-dimensional stability provided by eight spinal fixation devices has been studied in an in vitro biomechanical model using seven-vertebrae (T9-L3) fresh cadaveric thoracolumbar specimens. An injury was created at T12-L1 by complete transection of the posterior elements and posterior half of the intervertebral disc, leaving the anterior half of the intervertebral disc and anterior longitudinal ligament intact. The three-dimensional rotational and translational motions, measures of biomechanical instabilities, were determined under physiologic loads for the intact specimen after injury and instrumentation with each of the eight fixation devices. The tested devices were: Dunn's anterior device (DD); Harrington distraction (HD); Harrington compression (HC); Harrington distraction-compression combination (HDC); Harrington distraction with sleeves (HDS); Luque rods (LQ); Luque rectangle (LR); and Luque short rectangle (LSR). The following devices were stable under the four loads: Flexion: HC, HD, HDC, HDS, LQ, and LR; Extension: HD, HDC, HDS, LQ, and LR; Lateral Bending: LQ and LR; and Axial Rotation: none.
利用七节椎体（T9-L3）新鲜尸体胸腰椎标本，在体外生物力学模型中研究了八种脊柱固定装置提供的三维稳定性。通过完全横断后部结构和椎间盘后半部，在T12-L1处造成损伤，使椎间盘前半部和前纵韧带保持完整。在生理负荷下，对损伤后完整标本以及使用八种固定装置中的每一种进行器械固定后的标本，测定三维旋转和平移运动，即生物力学不稳定性的指标。所测试的装置有：邓恩前路装置（DD）；哈林顿撑开器（HD）；哈林顿加压装置（HC）；哈林顿撑开-加压组合装置（HDC）；带套筒的哈林顿撑开器（HDS）；鲁克棒（LQ）；鲁克矩形装置（LR）；以及鲁克短矩形装置（LSR）。以下装置在四种负荷下是稳定的：前屈：HC、HD、HDC、HDS、LQ和LR；后伸：HD、HDC、HDS、LQ和LR；侧屈：LQ和LR；轴向旋转：无。
