小关节切除术
医学
腰椎
运动范围
解剖
口腔正畸科
椎板切除术
外科
脊髓
精神科
作者
Kuniyoshi Abumi,Manohar M. Panjabi,K. Kramer,Joanne Duranceau,Thomas R. Oxland,Joseph J. Crisco
出处
期刊:Spine
[Ovid Technologies (Wolters Kluwer)]
日期:1990-11-01
卷期号:15 (11): 1142-1147
被引量:442
标识
DOI:10.1097/00007632-199011010-00011
摘要
In an in vitro experiment using fresh human lumbar functional spinal units, the effects of the division of the posterior ligaments (consisting of the supraspinous/interspinous ligaments) and graded facetectomies were investigated. The graded facetectomies consisted of unilateral and bilateral medial facetectomies, and unilateral and bilateral total facetectomies. Six kinds of moments were applied and ranges of motion (ROM) and neutral zones (NZ) were determined three-dimensionally by stereophotogrammetric methods. Range of motion was not affected by the division of the supraspinous/interspinous ligaments for all load modes. In flexion, ROM increased slightly after unilateral medial facetectomy. In right axial rotation, ROM increased after left unilateral total facetectomy. Range of motion was not affected, even by bilateral total facetectomies, in extension and lateral bendings. This study suggested that medial facetectomy does not affect lumbar spinal stability, and conversely, total facetectomy, even created unilaterally, makes the lumbar spine unstable.
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