Chinese Journal Of Clinical Anatomy ›› 2012, Vol. 30 ›› Issue (4): 443-446.

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The inferior tibiofibular syndesmosis ligaments' injury and the ankle position: biomechanical study

ZOU Ming1,ZHANG Yan2,BAI Guang-fu1,LUO Yu-chun1,LIU Shu-kun2,ZHAO Wei-dong3   

  1. 1.Wuxi Clinical College, Anhui Medical University, Wuxi 214044; 2. Department of Orthopedics, the 101 Hospital of Chinese PLA, Wuxi 214044; 3. Key Laboratory of Medical Biomechanics, Southern Medical University, Guangzhou 510515, China
  • Received:2012-01-10 Published:2012-07-27

Abstract:

Objective    To explore biomechanical features of the tibiofibular syndesmosis ligaments, and the ankle position which induce the injury of ligaments easily.    Methods    8 (left 4, right 4) fresh adult leg specimens were used in this study. The tibiofibular syndesmosis ligaments were completely exposed and cut horizontally above the ankle about 20cm. The top of ligaments was embedded with denture powder for simulating the top tibiofibular joint, as well, the bottom was also embedded and fixed on material experimental machine, after cutting from calcaneal bone, keeping subtalar, talonavicular and calcaneocuboid joints. At the different positions, involving neutral position, dorsiflexion (15°), plantarflexion (20°), varus (15°), valgus (20°), internal rotation (10°) and external rotation (5°), the length and stress changes of ligaments after loading with the axial 500N and external rotation torque (5N.m), were analyzed.   Results    At the position of introversion and plantarflexion, the significant stress changes of inferior and anterior tibiofibular ligaments, the interosseous ligament, and the posterior ligament( Including the deep transverse ligament) appeared, as  (0.1294±0.0030) and (0.1150±0.0018),(0.1331±0.0030) and (0.1138±0.0053), (0.0427±0.0016) and(0.0285±0.0015) respectively.    Conclusions    At the position of introversion and plantarflexion, the inferior and anterior tibiofibular ligament, the interosseous ligament, and the posterior ligament easy to be damaged, for those ligaments endure the largest stress.

Key words: Inferior tibiofibular syndesmosis ligaments, The position of ankle, Biomechanics

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