Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran.
Department of Biomechanics and Sports Injuries, Faculty of Physical Education and Sport Sciences, Kharazmi University, Tehran, Iran.
Gait Posture. 2022 Jul;96:154-159. doi: 10.1016/j.gaitpost.2022.05.024. Epub 2022 May 23.
Pes Planus or Flat feet is one of the most common lower limb abnormalities. When runners with this abnormality participate in recreational running, interventional therapies could help in pain alleviation and enhance performance. To determine the most effective treatment, however, a biomechanical examination of the effects of each treatment modality is required.
The aim of the present study was to investigate the effects of Foot Orthoses (FOs) and Low-Dye Tape (LDT) on lower limb joint angles and moments during running in individuals with pes planus.
kinematic and kinetic data of 20 young people with pes planus were measured during running in three conditions: (1) SHOD (2) with shoes and FOs (3) with shoes and LDT. One-way repeated measure ANOVA was used to investigate the impacts of the FOs and LDT on the lower limb joint angles and moments throughout the stance phase of the running cycle.
The results showed that FOs reduced ankle eversion compared to SHOD and LDT (P < 0.001) and decreased the dorsiflexion angle (P = 0.005) and the plantarflexor moment compared to the SHOD (P < 0.001). FOs increased knee adduction angle (P = 0.021) and knee external rotator moment (P < 0.001) compared to both conditions and increased knee extensor and abductor moments compared to SHOD (P < 0.001). At the hip joint, FOs only increased hip external rotation compared with the LDT condition (P = 0.031); and LDT increased hip extensor moment compared to SHOD and FOs (P = 0.037) and also increased hip adduction angle compared to SHOD (P = 0.037).
FOs with a medial wedge appears to increase the external knee adduction moment and knee adduction angles, which are risk factors for the development and progression of knee osteoarthritis. Further, usage of FOs seems to reduce the ankle joint role in propulsion as it impacts the ankle sagittal angles and moments.
平足或扁平足是最常见的下肢畸形之一。当患有这种畸形的跑步者参加休闲跑步时，介入治疗可以帮助缓解疼痛并提高表现。然而，为了确定最有效的治疗方法，需要对每种治疗方式的生物力学效果进行检查。
本研究的目的是研究足矫形器（FOs）和低染料胶带（LDT）在扁平足患者跑步时对下肢关节角度和力矩的影响。
在三种情况下测量了 20 名年轻平足患者在跑步时的运动学和动力学数据：（1）SHOD（2）穿着鞋子和 FOs（3）穿着鞋子和 LDT。采用单向重复测量方差分析来研究 FOs 和 LDT 在跑步周期支撑阶段对下肢关节角度和力矩的影响。
结果表明，FOs 与 SHOD 和 LDT 相比，减小了踝关节外翻（P < 0.001），减小了背屈角度（P = 0.005）和跖屈肌力矩（P < 0.001）与 SHOD 相比。FOs 与两种情况相比，增加了膝关节内收角度（P = 0.021）和膝关节外旋力矩（P < 0.001），与 SHOD 相比，增加了膝关节伸肌和外展肌力矩（P < 0.001）。在髋关节方面，FOs 仅与 LDT 条件相比增加了髋关节外旋（P = 0.031）；与 SHOD 和 FOs 相比，LDT 增加了髋关节伸肌力矩（P = 0.037），与 SHOD 相比，LDT 增加了髋关节内收角度（P = 0.037）。
带有内侧楔形物的 FOs 似乎会增加膝关节外侧内收力矩和膝关节内收角度，这是膝关节骨关节炎发展和进展的危险因素。此外，FOs 的使用似乎会降低踝关节在推进中的作用，因为它会影响踝关节矢状角度和力矩。
