Orthopedic Outpatient Clinic, Faculty of Physical Therapy, Cairo University, Egypt.
Department of Physical Therapy for Musculoskeletal Disorders and its Surgery, Faculty of Physical Therapy, Cairo University, Egypt.
J Musculoskelet Neuronal Interact. 2020 Sep 1;20(3):404-410.
Flexible flatfoot is a common deformity in adults that has been thought to be a causative factor of a lot of lower limb injuries and back pain. Core muscles act as stabilizers for the trunk and weak core places a person at greater risk of low back pain and lower limb injuries. We aimed to compare the core muscles' endurance between individuals with and without flatfeet.
Thirty subjects with bilateral flexible flatfeet (study group) were compared with thirty healthy subjects (control group). Navicular drop test was used to evaluate the medial longitudinal arch. Modified back extensors, modified flexion and lateral muscles' endurance tests were used to evaluate the endurance of the core muscles.
The lateral muscles' endurance time in the flatfeet group was found to be significantly lower than that of the healthy group on both sides (p=0.0001). However, no significant difference was found in the trunk flexors' (p=0.15) and trunk extensors' (p=0.27) endurance time between both groups.
Impairment of the lateral core muscles' endurance was observed in subjects with bilateral flexible flatfeet which may predispose to low back pain and other lower limb injuries in those subjects.
扁平足是成年人常见的一种足部畸形，被认为是许多下肢损伤和背痛的致病因素。核心肌群是躯干的稳定器，核心肌群薄弱会使人更容易患下腰痛和下肢损伤。我们旨在比较扁平足患者和无扁平足患者的核心肌群耐力。
30 名双侧柔性扁平足患者（研究组）与 30 名健康受试者（对照组）进行比较。使用足舟骨下降试验评估内侧纵弓。改良后伸肌、改良前屈肌和侧肌耐力试验用于评估核心肌群的耐力。
扁平足组的侧肌耐力时间在两侧均明显低于健康组（p=0.0001）。然而，两组间躯干屈肌（p=0.15）和躯干伸肌（p=0.27）的耐力时间无显著差异。
双侧柔性扁平足患者的侧核心肌群耐力受损，这可能使这些患者容易患下腰痛和其他下肢损伤。
