Reitman Charles A, Gertzbein Stanley D, Francis William R
Department of Orthopedic Surgery, Baylor College of Medicine, Houston, TX, USA.
Spine J. 2002 Jul-Aug;2(4):303-6. doi: 10.1016/s1529-9430(02)00200-0.
An accepted classification of spondylolysis exists. However, etiology remains controversial. There are several reports supporting acquired stress fractures in the etiology of this condition, although radiographic evidence of an acquired fracture in a given individual is very rare.
To present evidence of development of pars defects during the teenage years.
STUDY DESIGN/SETTING: Retrospective review of charts.
Two case studies.
Charts and X-rays were reviewed to look for radiographic evidence of development of pars defects in patients who were ultimately found to have spondylolisthesis or spondylolysis.
Two cases were found that demonstrated development of a pars fracture. Both patients had radiographic evidence that these fractures developed during their teenage years. Both were active individuals with a consistent level of participation in athletics.
Although development of pars defects may be multifactorial, these two cases support the concept that these fractures can be acquired lesions resulting from repetitive stress injury. They also demonstrate that isthmic defects can arise in teenagers, in these cases in an athletic population.
峡部裂已有公认的分类。然而，其病因仍存在争议。有几份报告支持后天性应力性骨折是这种疾病病因的观点，尽管在特定个体中后天性骨折的影像学证据非常罕见。
提供青少年时期峡部缺损发展的证据。
研究设计/地点：图表的回顾性研究。
两个病例研究。
回顾图表和X线片，以寻找最终被诊断为腰椎滑脱或峡部裂患者峡部缺损发展的影像学证据。
发现两例显示峡部骨折的发展情况。两名患者均有影像学证据表明这些骨折发生在青少年时期。两人都很活跃，参与体育运动的程度一致。
虽然峡部缺损的发展可能是多因素的，但这两个病例支持了这些骨折可能是由重复性应力损伤导致的后天性病变这一观点。它们还表明峡部缺损可出现在青少年中，在这些病例中是在运动员群体中。
