腰椎椎弓裂（lumbar spondylolysis，LS）系指椎弓峡部缺损，如引起椎体前移则称脊椎滑脱。由于峡部不连的裂隙是由纤维组织连接，因此其椎体的稳定性...
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作者认为，椎弓峡部裂实质上主要是由局部应力增高而引起的疲劳骨折，而腰椎后伸与其关系最为密切。
The authors conclude that spondylolysis is mainly the fatigue fracture due to locally increased stress and is contributing most by backward extension of lumbar spine.
目的：探讨平行于椎弓ct扫描对腰椎峡部裂的诊断价值及临床应用。
Objective: to study the ct diagnostic value and clinical applications of ct scans parallel to isthmic in isthmic defect of lumbar spine.
目的研究64层CT不同角度MPR图像诊断腰椎弓峡部裂的价值。
Objective To study the value of different angle MPR using 64-slice CT in diagnosing spondylolysis.
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