Cyron B M, Hutton W C
Spine (Phila Pa 1976). 1979 Mar-Apr;4(2):163-7. doi: 10.1097/00007632-197903000-00013.
The possible role of the physical and mechanical properties of the neural arch as contributing factors in the etiology of spondylolysis was tested by comparing two groups of vertebral specimens obtained at necropsy. Group I specimens had been subjected to repetitive cyclic force which they withstood without fracturing. Group II specimens were randomly selected. The cross-sectional distribution of cortical and cancellous bone in the partes interarticulares were measured, and the two groups compared. The previously stressed group was found to have a greater percentage of cortical bone than the random group. The data are interpreted to suggest that thin partes interarticulares may predispose to spondylolysis through the mechanism of fatigue failure.
通过比较两组尸检获得的椎体标本，测试了神经弓的物理和力学特性作为脊椎峡部裂病因学中的促成因素的可能作用。第一组标本受到反复循环力作用，但未发生骨折。第二组标本是随机选取的。测量关节间部分皮质骨和松质骨的横截面分布，并对两组进行比较。结果发现，先前受力的组比随机组具有更高比例的皮质骨。这些数据被解释为表明，关节间部分薄弱可能通过疲劳失效机制导致脊椎峡部裂。
