Twomey L T
Spine (Phila Pa 1976). 1985 Mar;10(2):146-9. doi: 10.1097/00007632-198503000-00006.
Lumbar vertebral columns, removed from 23 male cadavers aged from 18 to 84 years, were tested for their reaction to a longitudinal traction load. Sustained lumbar traction using a load of 9 kg for 30 min was applied to each specimen. The amount of initial distraction and traction creep recorded. Initial vertebral separation was greatest in those specimens with wide disc spaces and least where there was evidence of disc degeneration. The residual deformation on load removal was slower and less complete in the older subjects.
从23名年龄在18至84岁之间的男性尸体上取下腰椎柱，测试其对纵向牵引负荷的反应。对每个标本施加9公斤负荷持续30分钟的持续腰椎牵引。记录初始牵开量和牵引蠕变。初始椎体分离在椎间盘间隙宽的标本中最大，在有椎间盘退变迹象的标本中最小。在老年受试者中，去除负荷后的残余变形较慢且不太完全。
