软组织重建术治疗桡尺远侧关节不稳的生物力学研究

doi:10.13418/j.issn.1001-165x.2017.02.017

Abstract

Abstract:

Objective　To compare the biomechanical effects of two soft tissue reconstruction procedures on the reconstruction of distal radioulnar joint stability, and to provide the basis for clinical application. Methods　Eight adult upper limb specimens were obtained, the injury model made and the operation mode simulated. The pronation and supination torque was compared among the normal group, injury group, palm long tendon group and flexor carpi radialis group when the wrist was located at dorsiflexion 30°, neutral position and flexion 30°.　Results　There was significant difference in pronation and supination torque between the normal group and injury group (P＞0.05). The difference between the normal group and palm long tendon group was not statistically significant. There was no statistically significant difference of torque between the normal group and flexor carpi radialis group when the wrist was located at dorsiflexion 30 ° and neutral position，but was statistically significant at flexion 30° (P＞0.05).　Conclusion　Radioulnar ligament injury can cause instability of the distal radioulnar joint. The reconstruction of the radioulnar ligament can restore the stability of the joint with the palmaris tendon graft. After the ligament reconstruction with transposition of the partial flexor carpi radialis, the stability of the wrist in dorsiflexion 30 °and neutral position was restored, but in flexion 30 ° when there is still joint instability.

Key words: Joint instability, Radioulnar ligament, Soft tissue reconstruction, Biomechanics

LAN Wan-li，HUANG Dong，KUANG Yi-zhen，ZUO Jie-yi, CHEN Zhi-ying, CAI Hui, LIU Xiao-chun. Biomechanical study of soft tissue reconstruction in treatment of distal radioular joint instability[J]. Chinese Journal Of Clinical Anatomy, 2017, 35(2): 203-206.

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Biomechanical study of soft tissue reconstruction in treatment of distal radioular joint instability

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