机构地区:[1]南方医科大学基础医学院,人体解剖学教研室,广东省数字医学与生物力学重点实验室,广州510515 [2]南方医科大学中西医结合医院骨科,广州510315 [3]广东省人民医院骨科,广州510080
出 处:《医用生物力学》2023年第3期549-555,共7页Journal of Medical Biomechanics
基 金:国家自然科学基金项目(32101054);广东省自然科学基金项目(2021A1515010877)。
摘 要:目的探究足踝体外生物力学实验中肌力对足关节接触力、峰值压强以及接触面积的影响,为选择合适的加载方式提供依据。方法踝关节中立位状态下,对新鲜小腿和足离体标本分别进行有无肌力两种方式加载,测量加载状态下第1跖趾关节、第2跖趾关节、第1跖楔关节、第2跖楔关节、内侧楔舟关节、中间楔舟关节、距舟关节、跟骰关节、距下关节(后关节面)以及胫距关节的接触力、峰值压强和接触面积,并对结果进行对比分析。结果与无肌力加载状态相比,进行肌力加载时足第1跖趾关节、第2跖趾关节、第1跖楔关节、第2跖楔关节、内侧楔舟关节、中间楔舟关节、距舟关节和胫距关节的关节接触力均显著增大(P<0.05),变化百分比分别为719.28%、311.37%、128.67%、50.82%、54.89%、57.63%、79.98%和50.34%;足第1跖趾关节、第1跖楔关节和距舟关节的关节峰值压强显著增大(P<0.05),变化百分比分别为176.14%、62.91%和40.07%;足第1跖趾关节、第1跖楔关节、中间楔舟关节以及距下关节(后关节面)的关节接触面积均显著增大(P<0.05),变化百分比分别为132.20%、55.41%、30.97%和26.87%。结论足踝标本生物力学实验中,进行肌力加载对足各关节的关节接触力、峰值压强或接触面积均产生显著影响,前足表现尤甚。在进行相关体外标本研究时,需要考虑肌力加载对足踝受力情况的影响,为足踝生物力学实验提供参考。Objective To explore the effect of mucle force on contact force,peak pressure and contact area of foot joint in in vitro biomechanical experiment of foot and ankle,so as to provide references for choosing appropriate loading modes.Methods In neutral position of the ankle joint,fresh calf and foot specimens were simulated with or without mucle force loading.The contact force,peak pressure and contact area of the 1st metatarsophalangeal joint,the 2nd metatarsophalangeal joint,the 1st tarsometatarsal joint,the 2nd tarsometatarsal joint,the medial cuneonavicular joint,the intermediate cuneonavicular joint,the talonavicular joint,the calcicocuboid joint,the subtalar joint(posterior articular surface)and the tibiotalar joint of normal foot under loading were measured,the results are compared and analyzed.Results Under muscle force loading,the contact force of the 1st metatarsophalangeal joint,the 2nd metatarsophalangeal joint,the 1st tarsometatarsal joint,the 2nd tarsometatarsal joint,the medial cuneonavicular joint,the intermediate cuneonavicular joint,the talonavicular joint and the tibiotalar joint were significantly greater than those without muscle force loading(P<0.05),and the change percentages were 719.28%,311.37%,128.67%,50.82%,54.89%,57.63%,79.98%and 50.34%,respectively.The peak pressures of the 1st metatarsophalangeal joint,the 1st tarsometatarsal joint and the talonavicular joint under muscle force loading were significantly higher than those without muscle force loading(P<0.05),and the change percentages were 176.14%,62.91%and 40.07%,respectively.The contact area of the 1st metatarsophalangeal joint,the 1st tarsometatarsal joint,the intermediate cuneonavicular joint and the subtalar joint(posterior articular surface)under muscle force loading increased significantly(P<0.05),and the change percentages were 132.20%,55.41%,30.97%and 26.87%,respectively.Conclusions In biomechanical experiment of foot and ankle specimens,muscle force loading has a significant effect on contact force,peak pressure and contact ar
分 类 号:R318.01[医药卫生—生物医学工程]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...