Chinese Journal of Clinical Anatomy ›› 2023, Vol. 41 ›› Issue (1): 81-86.doi: 10.13418/j.issn.1001-165x.2023.1.15

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Biomechanical effect of the distal Chevron osteotomy on contact characteristics of foot joints of hallux valgus

Ma Dong1, Wang Yining1, Xu Chujiang2, Xiao Jin3, Feng Zhengkuan1, Xu Guangwei1, Yu Wanqi1, Qian Lei1*, Ouyang Jun1*   

  1. 1.Department of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangdong Provincial Key Laboratory of Digital Medicine and Biomechanics, Guangzhou 510515, China; 2. Department of Orthopedics, TCM-Integrated Hospital of Southern Medical University, Guangzhou 510515, China; 3. Department of Orthopedics, Guangdong Provincial People’s Hospital, Guangzhou 510000, China
  • Received:2022-09-26 Online:2023-01-25 Published:2023-02-08

Abstract: Objective   To explore the influence of the distal lateral displacement distance of Chevron osteotomy on contact characteristics of the hallux valgus, so as to provide reference for selecting suitable displacement distance in clinical practice.   Methods    The contact force, peak pressure and contact area of each joint of the forefoot, midfoot and hindfoot were measured in normal foot, hallux valgus foot, the distal Chevron osteotomy of the hallux valgus after the lateral displacement of 2.0, 4.0, 6.0 mm in the neutral position of the ankle joint, respectively.  The results were compared and analyzed.    Results   Compared with the normal foot, the contact force of the 1st tarsometatarsal joint (t=-3.33, P=0.02), the calcaneocuboid joint (t=-2.74, P=0.03) and the subtalar joint (posterior articular surface) (t=-2.89, P=0.03) of hallux valgus foot significantly increased. The peak pressure of the talonavicular joint (t=-2.73, P=0.03) and the calcaneocuboid joint (t=-2.74, P=0.03) of the hallux valgus foot increased significantly. After Chevron osteotomy was performed, with the increasing of lateral displacement distance of distal osteotomy, the contact force of the 1st tarsometatarsal joint and the calcaneocuboid joint of hallux valgus foot decreased gradually; the peak pressure of the the talonavicular joint and the calcaneocuboid joint of hallux valgus decreased gradually.    Conclusions    After Chevron osteotomy is performed on moderate hallux valgus foot, when the distal end of the first metatarsal osteotomy is displaced outward by 4mm or 6mm, it can effectively restore the distribution of some inter articular forces and alleviate the local stress concentration of some joints.

Key words: Hallux valgus; ,  , Chevron osteotomy; ,  , Contact force; ,  , Peak pressure; ,  ,  Contact area

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