Biomechanical Comparison of the Holding Strength of a PEEK Locking Dorsal Plate Versus Lag Screw Fixation for Triple Arthrodesis:

Foot & Ankle Orthopaedics

JeffersonSabatini¹ 

关键词: Biomechanical;    PEEK;    Triple arthrodesis;   

DOI  :  10.1177/2473011416S00137

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:HindfootIntroduction/Purpose:Hindfoot arthrodesis is often the treatment of choice for hindfoot pain due to arthritis or advanced deformity. Good results are dependent on secure fixation while avoiding hardware related side effects. A small radiolucent locking dorsal circular plate placed into the talonavicular and calcaneocuboid joints may provide a low-profile solution for secure fixation of these joints. The goal of this study is to compare the fixation strength of a locking dorsal circular plate to that of the current gold standard technique of screw fixation.Methods:Eight matched fresh-frozen cadaveric foot-ankle pairs were obtained for comparison of the two fixation methods. One side of each matched pair was plated with a locking dorsal circular plate and the contralateral foot was fixed with partially threaded 4.5 mm cannulated screws. All subtalar joints were fixed with two 7.3 mm cannulated screws. Translational forces through a mechanical testing system (MTS) were applied to the constru...

【 授权许可】

CC BY