Zimmerman M C, Waite A M, Deehan M, Tovey J, Oppenheim W
Department of Orthopaedics, University of Medicine and Dentistry, New Jersey Medical School, Newark 07103.
J Orthop Trauma. 1994;8(3):233-9. doi: 10.1097/00005131-199406000-00009.
A biomechanical study was initiated to compare four fracture fixation devices: the AO dynamic compression plate, a distal fin locking nail, a solid locked intramedullary nail, and paired flexible nails for humeral fracture fixation. Eighteen pairs of fresh-frozen, intact humeri were harvested, standardized midshaft transverse osteotomies were created in each specimen, and left and right specimens were fixed with plates and nails, respectively. The bending properties of the plate-fixed humeri were significantly greater than the nailed humeri in both the anteroposterior and mediolateral planes on a paired basis. The distal fin nail and solid locked nail had comparable bending properties, and both had bending properties superior to those measured for the paired flexible nails. The torsional properties of humeri fixed with plates and solid locked nails were equivalent, except for rigidity and stiffness, which were superior for the nail. Both fixation methods resulted in torsional properties significantly greater to those measured for humeri fixed with paired flexible nails or a distal fin nail.
开展了一项生物力学研究，以比较四种用于肱骨骨折固定的骨折固定装置：AO动力加压钢板、远端鳍状锁定钉、实心锁定髓内钉和配对弹性钉。采集了18对新鲜冷冻的完整肱骨，在每个标本上制作标准化的中段横行截骨，左右标本分别用钢板和钉子固定。在前后平面和内外侧平面上，配对比较时，钢板固定的肱骨的弯曲性能显著高于钉子固定的肱骨。远端鳍状钉和实心锁定钉具有相当的弯曲性能，且二者的弯曲性能均优于配对弹性钉的测量值。钢板和实心锁定钉固定的肱骨的扭转性能相当，但钉子的刚性和刚度更优。两种固定方法导致的扭转性能均显著高于配对弹性钉或远端鳍状钉固定的肱骨的测量值。
