Biomechanics Research Laboratory, University of Wollongong, Northfields Avenue, Wollongong, New South Wales 2522, Australia.
J Orthop Res. 2011 Jul;29(7):1042-6. doi: 10.1002/jor.21328. Epub 2011 Feb 24.
The purpose of this study was to determine whether thickness of the plantar soft tissue (ST) under the metatarsal heads (MTH) differed between older individuals with and without toe deformities. Non-weightbearing total ST and fat pad (FP) thickness at the heel, 1st metatarsal head (1MTH) and 5th metatarsal head (5MTH) were measured using ultrasound in 312 men and women aged over 60 years. Each participant had their feet assessed for the presence of hallux valgus or lesser toe deformities. Total ST and FP thicknesses in those with hallux valgus (n=36) or lesser toe deformities (n=72) were compared to gender-, age- and BMI-matched controls using independent t-tests. Individuals with hallux valgus had significantly reduced total ST thickness under 1MTH compared to controls (7.4 ± 1.6 mm vs. 8.5 ± 1.5 mm; p = 0.002). Similarly, individuals with lesser toe deformities displayed significantly reduced total ST thickness under 5MTH compared to controls (5.1 ± 1.0 mm vs. 5.5 ± 1.3 mm; p = 0.01). As FP thickness did not differ between cases and controls, we speculate that the musculotendinous complex is compromised, and may result in reduced toe function in those with toe deformities.
本研究旨在确定跖骨头下（MTH）的足底软组织（ST）厚度是否在伴有和不伴有脚趾畸形的老年人之间存在差异。使用超声测量了 312 名 60 岁以上男性和女性的非负重足底总 ST 和跟骨、第一跖骨头（1MTH）和第五跖骨头（5MTH）处的脂肪垫（FP）厚度。对每位参与者的足进行评估，以确定是否存在拇外翻或小脚趾畸形。使用独立 t 检验将拇外翻（n=36）或小脚趾畸形（n=72）患者的足底总 ST 和 FP 厚度与性别、年龄和 BMI 匹配的对照组进行比较。与对照组相比（7.4±1.6mm 比 8.5±1.5mm；p=0.002），拇外翻患者的 1MTH 下足底总 ST 厚度明显减少。同样，与对照组相比（5.1±1.0mm 比 5.5±1.3mm；p=0.01），小脚趾畸形患者的 5MTH 下足底总 ST 厚度明显减少。由于病例和对照组之间的 FP 厚度没有差异，我们推测肌肉腱复合体受到了损害，这可能导致脚趾畸形患者的脚趾功能降低。
