Impact of ruptured tibiofibular syndesmosis on biomechanics of the ankle joint
10.3760/cma.j.issn.1671-7600.2015.06.016
- VernacularTitle:下胫腓联合断裂对踝关节生物力学影响的研究
- Author:
Weiqiang DONG
;
Bin YU
;
Bo BAI
- Publication Type:Journal Article
- Keywords:
Ankle joint;
Ligaments;
Biomechanics;
Anterior lower tibiofibular ligament
- From:
Chinese Journal of Orthopaedic Trauma
2015;17(6):532-535
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the impact of partial or complete rupture of the tibiofibular syndesmosis on the biomechanical properties of the ankle joint.Methods Six fresh cadaveric specimens of adult ankle were used for creation of 3 models of tibiofibular syndesmosis.In model A,the medial and lateral ligaments of the ankle joint and the tibiofihular syndesmosis were intact.In model B,only the anterior lower tibiofibular ligament was broken.In model C,all inferior tibiofibular ligaments were broken.The 3 models were tested with an electronic pressure sensor in a BOSE material testing machine respectively at 5 positions:10° dorsal extension,20° inversion,20° eversion,20° plantar flexion,and neutral position.The peak values and locations of the compressive stresses of the 3 models at 5 positions were recorded.All the data were collected and analyzed using IBM SPSS 22.0 statistical software.Results Model A exhibited the smallest average stress at all the 5 positions,followed by model B and model C,with significant differences between groups (P ＜ 0.05).The locations of main compressive stress at the neutral position,10° dorsal extension,and 20° plantar flexion in model B and model C tended to expand outwards compared with model A,especially in model C.Conclusions Rupture of the anterior lower tibiofibular ligament and inferior tibiofibular ligaments may increase the compressive stress on the ankle joint,especially rupture of the inferior tibiofibular ligaments.The location of main compressive stress tends to expand outwards when the anterior lower tibiofibular ligament and inferior tibiofihular ligaments are broken,especially the inferior tibiofibular ligaments.
