Professor, Faculty of Medicine and Health Sciences, Universitat Intenacional de Catalunya, Barcelona, Spain.
Professor, Faculty of Health Sciences, University of Zaragoza, Zaragoza, Spain.
J Foot Ankle Surg. 2020 Jul-Aug;59(4):763-767. doi: 10.1053/j.jfas.2020.02.001. Epub 2020 Apr 3.
The tarsal tunnel is a fibrous osseous conduit for the tibial nerve and associated tendons. It is mechanically dynamic, and foot and ankle movements appear to move and change tunnel shape. However, the effect of foot and ankle movements is not clear. The aim of this study was to measure tarsal tunnel dimensions in anatomical position of the foot and ankle and quantify its changes at different positions in cadavers. A cross-sectional study with a total of 16 cryopreserved lower extremities from cadaveric specimens were used. The foot was cut using an anatomical saw at the level of the tarsal tunnel. Measurements of the cross-sectional area (CSA), transverse diameter (TD), longitudinal diameter (LD) were taken in anatomical position and during foot and ankle movements. All the tarsal tunnel measurements were significantly modified by ankle plantar flexion (p < .05). The CSA increased by 68.97 mm (p < .001), the TD increased by 1.40 mm (p < .002) and the LD increased by 2.55 mm (p < .007). The TD was also significantly modified by the inversion position of the ankle, showing an increase of 0.84 mm (p < .004). The rest of the ankle positions did not produce significant changes in tarsal tunnel measurements. Foot and ankle plantar flexion position produce and increase in the CSA and the TD of the tarsal tunnel at its distal end in cadavers. This could suggest a reduction in tarsal tunnel pressure during plantar flexion.
跗管是胫骨神经和相关肌腱的纤维骨性管道。它具有力学动态性，足部和踝关节的运动似乎会改变和改变隧道的形状。然而，足部和踝关节运动的影响尚不清楚。本研究的目的是测量足部和踝关节解剖位置的跗管尺寸，并在尸体的不同位置量化其变化。采用总共 16 个冷冻保存的尸体标本进行横截面研究。在跗管水平使用解剖锯切割足部。在解剖位置和足部及踝关节运动时，测量横截面积（CSA）、横径（TD）和纵径（LD）。所有跗管测量值均受踝关节跖屈显著影响（p <.05）。CSA 增加 68.97mm（p <.001），TD 增加 1.40mm（p <.002），LD 增加 2.55mm（p <.007）。TD 还受踝关节内翻位置的显著影响，增加 0.84mm（p <.004）。其余踝关节位置不会导致跗管测量值发生显著变化。足部和踝关节跖屈位置会导致尸体远端跗管 CSA 和 TD 增加。这可能表明跖屈时跗管压力降低。
