一种在骨质疏松性模拟骨模型中评估锁定接骨板治疗腓骨远端骨折的生物力学评估。
A biomechanical evaluation of locked plating for distal fibula fractures in an osteoporotic sawbone model.
机构信息
Department of Orthopedics, Warren Alpert Medical School, Brown University, 2 Dudley Street, Providence, RI 02903, United States.
Department of Orthopedics, Warren Alpert Medical School, Brown University, 2 Dudley Street, Providence, RI 02903, United States.
出版信息
Foot Ankle Surg. 2014 Mar;20(1):44-7. doi: 10.1016/j.fas.2013.10.004. Epub 2013 Nov 13.
BACKGROUND
Supination external rotation (SER) injuries are commonly fixed with a one third tubular neutralization plate. This study investigated if a combination locked plate with additional fixation options was biomechanically superior in osteoporotic bone and comminuted fracture models.
METHODS
Using an osteoporotic and a comminuted Sawbones model, SER injuries were fixed with a lag screw for simple oblique fibula fractures, and either a one third tubular neutralization plate or a locking plate. Samples were tested in stiffness, peak torque, displacement at failure, and torsion fatigue.
RESULTS
There was no statistically significant difference in biomechanical testing for fractures treated with a lag screw and plate. For comminuted fractures, locked plating demonstrated statistically significant stiffer fixation.
CONCLUSION
A combination locked plate is biomechanically superior to a standard one third tubular plate in comminuted SER ankle fractures. There was no biomechanical superiority between locked and one third tubular plates when the fracture was amenable to a lag screw.
背景
旋后外旋（SER）损伤通常采用三分之一管状中和板固定。本研究旨在探讨在骨质疏松和粉碎性骨折模型中，具有附加固定选择的组合锁定板在生物力学上是否更优。
方法
使用骨质疏松和粉碎性 Sawbones 模型，对单纯斜行腓骨骨折采用拉力螺钉固定，然后分别采用三分之一管状中和板或锁定板固定。对标本进行刚度、峰值扭矩、失效位移和扭转疲劳测试。
结果
采用拉力螺钉和钢板治疗的骨折在生物力学测试中无统计学差异。对于粉碎性骨折，锁定板固定显示出统计学上更稳定的固定。
结论
在粉碎性 SER 踝关节骨折中，组合式锁定板在生物力学上优于标准的三分之一管状板。当骨折适合使用拉力螺钉时，锁定板和三分之一管状板之间在生物力学上没有优势。
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