Lucas Rachel, Cornwall Mark
Department of Physical Therapy and Athletic Training, Northern Arizona University, Flagstaff, AZ, USA.
Department of Physical Therapy and Athletic Training, Northern Arizona University, Flagstaff, AZ, USA.
Foot (Edinb). 2017 Mar;30:38-42. doi: 10.1016/j.foot.2017.01.005. Epub 2017 Jan 17.
The absence of a functioning windlass mechanism may delay re-supination of the foot during locomotion and put excess stress on the mid-tarsal joint and soft tissues of the foot. The purpose of this study was to describe the foot posture of individuals that have an impaired or absent windlass mechanism. Forty-seven individuals (34 females and 13 males) with a mean age of 26 years were recruited to participate in this study. The Foot Posture Index was used to visually assess the posture of both feet. In addition, a digital gauge was used to measure dorsal arch height and midfoot width in bilateral resting standing. Dorsal arch height and mid-foot width were also measured in non-weight bearing. Finally, for those individuals without a functioning windlass mechanism, the amount of medial wedging needed to restore its function was measured. Subjects with an "absent" or "impaired" windlass mechanism had a mean Foot Posture Index of +6.8 (sd=2.5) compared to +2.5 (sd=3.1) for those with a functioning windlass mechanism. A series of independent t-tests showed that individuals without a functioning windlass mechanism had a more pronated foot posture, a lower dorsal arch height and a wider mid-foot width compared to those that had a functioning windlass mechanism. Finally, an average medial wedge of 5.1mm (sd=2.1) was able to produce a functioning windlass mechanism in those individuals that previously lacked one.
缺乏有效的绞盘机制可能会延迟行走过程中足部的重新旋后，并给跗中关节和足部软组织带来过大压力。本研究的目的是描述绞盘机制受损或缺失的个体的足部姿势。招募了47名平均年龄为26岁的个体（34名女性和13名男性）参与本研究。使用足部姿势指数对双脚的姿势进行视觉评估。此外，使用数字量规测量双侧静立位时的足背弓高度和中足宽度。还在非负重状态下测量足背弓高度和中足宽度。最后，对于那些没有有效绞盘机制的个体，测量恢复其功能所需的内侧楔入量。与具有有效绞盘机制的个体相比，绞盘机制“缺失”或“受损”的受试者的平均足部姿势指数为+6.8（标准差=2.5），而具有有效绞盘机制的个体为+2.5（标准差=3.1）。一系列独立样本t检验表明，与具有有效绞盘机制的个体相比，没有有效绞盘机制的个体足部姿势更内翻，足背弓高度更低，中足宽度更宽。最后，平均5.1毫米（标准差=2.1）的内侧楔块能够在那些先前缺乏有效绞盘机制的个体中产生有效的绞盘机制。
