Rigid Syndesmotic Fixation Alters Joint Contact Mechanics and Talar Kinematics:

Foot & Ankle Orthopaedics

Jessica E.Goetz¹ 

关键词: Contact Stress;    Syndesmosis;    Fixation;   

DOI  :  10.1177/2473011416S00271

学科分类：医学（综合）

来源: Sage Journals

【 摘 要 】

Category:TraumaIntroduction/Purpose:The variety of methods available for performing syndesmotic fixation have led to significant controversy about the optimal method of surgical fixation, and the effects of syndesmotic fixation on the biomechanics of the ankle remain poorly understood. The purpose of the present study was to use a cadaveric model to evaluate the effects of progressively increasing syndesmotic fixation on talar motion and contact stress on the talar dome and in the medial and lateral gutters.Methods:Twelve fresh-frozen cadaveric specimens were dissected to expose the ankle joint while leaving ligaments, syndesmosis, and interosseus membrane intact, simulating a best-case fibular reduction. Rigid clusters of reflective markers were attached to the tibia, the distal fibula, and the talus for tracking with a motion capture system. A Tekscan pressure sensor was inserted into the tibiotalar joint (n=6) or into both gutters (n=6) for measuring contact stress. A 600N axial load was applied in a c...

【 授权许可】

CC BY