Peterson C K, Haas M, Harger B L
Anglo-European College of Chiropractic, Bournemouth, Dorset, England.
J Manipulative Physiol Ther. 1990 Nov-Dec;13(9):491-7.
There remains a lack of definitive evidence regarding the etiology of pars defects, though evidence is mounting in favor of micro-trauma. Approximation of the articular facets, as occurs in subjects with increased sacral base angles, may result in greater stress to this area, leading to the development of pars defects. Alternatively, pars defects may facilitate approximation of the articular facets, resulting in a higher sacral base angle. The purpose of this study was to determine whether persons with spondylolysis have greater sacral base angles compared to persons without spondylolysis. The sacral base, sacrovertebral, and lumbosacral disc angles were measured on 30 subjects with radiographic evidence of spondylolysis at L5, and on 95 radiographically normal subjects. A 26% difference in the sacral base angle between spondylolytic and normal males was discovered. The results for females were inconclusive due to the sample size. Baseline data for the sacral base, sacrovertebral and lumbosacral disc angles were established for both normal and spondylolytic males and females. No relationship was found between spondylolysis and these two angles.
尽管越来越多的证据支持微创伤是峡部裂病因，但关于峡部裂的病因仍缺乏确凿证据。在骶骨底角增大的受试者中出现的关节突关节面接近，可能会导致该区域承受更大的压力，从而导致峡部裂的发生。或者，峡部裂可能会促进关节突关节面接近，导致更高的骶骨底角。本研究的目的是确定与没有峡部裂的人相比，有椎弓根峡部裂的人的骶骨底角是否更大。对30名有L5峡部裂影像学证据的受试者和95名影像学正常的受试者测量了骶骨底角、骶椎角和腰骶椎间盘角。发现有峡部裂的男性和正常男性的骶骨底角存在26%的差异。由于样本量的原因，女性的结果尚无定论。为正常和有峡部裂的男性和女性建立了骶骨底角、骶椎角和腰骶椎间盘角的基线数据。未发现峡部裂与这两个角度之间存在关联。
