Hung Li-Kun, Su Kuo-Chih, Lu Wen-Hsien, Lee Cheng-Hung
Department of Orthopedics, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung, Taiwan, 40705, Taiwan.
Department of Orthopedics, Chiayi Branch, Taichung Veterans General Hospital, Chiayi, Taiwan.
Int Orthop. 2017 Aug;41(8):1663-1669. doi: 10.1007/s00264-016-3384-z. Epub 2017 Jan 18.
A clavicle hook plate is a simple and effective method for treating acromioclavicular dislocation and distal clavicle fractures. However, subacromial osteolysis and peri-implant fractures are complicated for surgeons to manage. This study uses finite element analysis (FEA) to investigate the post-implantation biomechanics of clavicle hook plates with different hook angles.
This FEA study constructed a model with a clavicle, acromion, clavicle hook plate, and screws to simulate the implantation of clavicle hook plates at different hook angles (90°, 95°, 100°, 105°, and 110°) for treating acromioclavicular joint dislocations. This study investigated the biomechanics of the acromion, clavicle, hook plate, and screws.
A smaller hook angle increases the stress on the middle third of the clavicle. A larger hook angle increases the force exerted by the clavicle hook plate on the acromion. The screw at the most medial position on the plate generated the highest stress. The highest stress on the implanted clavicle hook plate was on the turning corner of the hook.
A clavicle hook plate with different hook angles may induce different biomechanical behaviors in the clavicle and acromion. Orthopedic surgeons must select a suitable clavicle hook plate based on the anatomical structure of each patient.
锁骨钩钢板是治疗肩锁关节脱位和锁骨远端骨折的一种简单有效的方法。然而，肩峰下骨溶解和植入物周围骨折给外科医生的处理带来了复杂性。本研究采用有限元分析（FEA）来研究不同钩角的锁骨钩钢板植入后的生物力学。
本有限元分析研究构建了一个包含锁骨、肩峰、锁骨钩钢板和螺钉的模型，以模拟不同钩角（90°、95°、100°、105°和110°）的锁骨钩钢板植入治疗肩锁关节脱位的情况。本研究调查了肩峰、锁骨、钩钢板和螺钉的生物力学。
较小的钩角会增加锁骨中三分之一处的应力。较大的钩角会增加锁骨钩钢板对肩峰施加的力。钢板最内侧位置的螺钉产生的应力最高。植入的锁骨钩钢板上的最高应力位于钩的转角处。
不同钩角的锁骨钩钢板可能会在锁骨和肩峰中诱发不同的生物力学行为。骨科医生必须根据每位患者的解剖结构选择合适的锁骨钩钢板。
