Behling Anja-Verena, Welte Lauren, Rainbow Michael J, Kelly Luke
School of Human Movement and Nutrition Science, The University of Queensland, Brisbane, Australia.
Department of Mechanical and Materials Engineering, Queen's University, Kingston, Canada.
Heliyon. 2024 Dec 19;11(1):e41301. doi: 10.1016/j.heliyon.2024.e41301. eCollection 2025 Jan 15.
The human ankle joint complex, consisting of calcaneus, talus, and tibia, is often simplified as a single functional ankle joint, neglecting the motion of the talus. Understanding the individual contributions of the talus and calcaneus is crucial for comprehending ankle joint complex function in healthy populations, and alterations in function that may exist in clinical conditions. To achieve accurate bone kinematics, high-resolution biplanar videoradiography was used with participants engaged in walking and running (n = 9) and hopping (n = 9) with no overlap in participants. The rotation axes for the calcaneus and talus were analysed relative to the tibia over the ankle joint dorsi-/plantar flexion phases. Contributions of the talocrural joint to overall ankle joint complex function were measured by comparing the range of motion (talus relative to calcaneus). Most of the sagittal plane motion in the ankle joint complex (80%) occurred in the talocrural joint, with the subtalar joint contributing 20%. Rotation of the calcaneus about the tibia dominated frontal and transverse plane motion during hopping. Although surprisingly large ranges of talus motion were also observed in these planes (>5deg), indicating notable inter-subject variability and that the talocrural joint is not a simple hinge joint. The study highlights the importance of directly quantifying talus motion to understand ankle joint complex function. The results showed opposing talus and calcaneus movements for many participants during different locomotor tasks, which may influence the magnitude and distribution of subtalar joint loading. In addition, the large out-of-sagittal plane movements and inter-subject variability in talus and calcaneus motion may further emphasize the need for personalised models to investigate treatments for ankle pathologies.
由跟骨、距骨和胫骨组成的人体踝关节复合体，通常被简化为一个单一的功能性踝关节，而忽略了距骨的运动。了解距骨和跟骨各自的作用，对于理解健康人群的踝关节复合体功能以及临床病症中可能存在的功能改变至关重要。为了实现精确的骨骼运动学分析，对参与行走、跑步（n = 9）和单足跳（n = 9）的参与者使用了高分辨率双平面视频放射成像技术，且参与者无重叠。在踝关节背屈/跖屈阶段，分析了跟骨和距骨相对于胫骨的旋转轴。通过比较运动范围（距骨相对于跟骨）来测量距小腿关节对整体踝关节复合体功能的贡献。踝关节复合体中大部分矢状面运动（80%）发生在距小腿关节，距下关节贡献20%。在单足跳过程中，跟骨围绕胫骨的旋转主导了额状面和横断面运动。尽管在这些平面中也观察到了惊人的距骨大范围运动（>5度），这表明个体间存在显著差异，且距小腿关节不是一个简单的铰链关节。该研究强调了直接量化距骨运动对于理解踝关节复合体功能的重要性。结果显示，在不同的运动任务中，许多参与者的距骨和跟骨运动方向相反，这可能会影响距下关节负荷的大小和分布。此外，距骨和跟骨运动中矢状面外的大幅度运动以及个体间差异，可能进一步凸显了需要个性化模型来研究踝关节病变治疗方法的必要性。
