摘要
报告两组手术开放复位内固定治疗脊柱损伤的临床疗效和生物力学测试比较。Ａ组哈氏棒加钢丝节段性固定１７例；Ｂ组爱德华兹套棒内固定６０例。结果（１）两组方法对畸形角的矫正均十分明显（Ｐ＜０．０１），Ｂ组优于Ａ组（Ｐ＜０．０１）。（２）移位百分率的改进亦显著（Ｐ＜０．０１），Ｂ组优于Ａ组（Ｐ＜０．０１）。（３）压缩椎体高度的恢复Ｂ组优于Ａ组（Ｐ＜０．０１）。（４）神经功能恢复一级以上Ａ组为８２％，Ｂ组为９０％。在模拟前中柱损伤的猪新鲜脊柱胸腰段标本上，利用传感器技术分别测得哈氏棒的矫正力为４８．７０±１０．８（Ｎ）；爱德华兹套棒为８９．０３±２６．２（Ｎ），后者矫正力量显著优于前者（Ｐ＜０．０００５）。两种内固定方法不论从临床疗效还是生物力学测试都证实爱德华兹套棒较哈氏棒内固定更为有效。
A retrospective comparison study of 77 consective patients with thoracic and lumbar fractures who were treated by two kinds of spinal internal fixation from 1984 to 1989 was undertaken. In group A, 17 patients were treated with Harrington distraction rods with segmental sublaminar wires. In group B, 60 patients were treated with Edwards rod sleeve devices. Bony union was obtained in all cases. Segmental kyphosises were corrected from 22.2° of preoperation to 11.8° of postoperation in group A, and from 29.3° to 2.6° in group B. Anteroposterior displacements were reduced from 32.3% to 9.7% in group A and from 30.3% to 0.8% in group B. Compressed vertebral hights were restored from 55.5% to 64.5% in group A and from 50.4% to 97.5% in group B. The clinical results in group B were superior to the one in group A ( P <0.01). Neurological function improvement above one Frankel grade was 82% in group A and 90% in group B. Biomechanical study was undertaken on 6 fresh swine thoracic and lumbar spines in which 15 injury models were made with anterior and middle columns disrupted and posterior column intact. Force transducer equipped with strain gauge was fixed anteriorly at vertebra spanning the disrupted site. The axial corrective forces applied with Edwards rod sleeve were 89.0 N which were 82.7% higher than 48.7 N with Harrington distraction rod. Authors believed that Edwards rod sleeve device was advantage over Harrington rod both in clinical results and biomechanics.
出处
《中华创伤杂志》
CAS
CSCD
北大核心
1994年第3期115-116,共2页
Chinese Journal of Trauma
关键词
脊柱
骨折
骨折固定术
生物力学
Spinal fracture Internal fixator Biomechanics
