The biomechanical relationship between the tendoachilles, plantar fascia and metatarsophalangeal joint dorsiflexion angle
The biomechanical relationship between the tendoachilles, plantar fascia and metatarsophalangeal joint dorsiflexion angle
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DOI：
10.1177/107110070002100104
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发表时间：
2000-01-01
影响因子：
2.7
通讯作者：
Hutton, WC
中科院分区：
文献类型：
--
作者：
Carlson, RE;Fleming, LL;Hutton, WC
我们进行了一项实验，以测量跟腱张力和足底筋膜应变之间的关系，以及这种关系是如何受跖趾关节背屈角度的影响的。对8具身体下肢标本进行生物力学测试。使用伺服液压试验机，对跟腱施加高达500N的拉力，同时使用伸缩仪测量足底筋膜上的应变。实验在四种不同的跖趾关节背屈角度(0度、5度、30度和45度)下重复进行。测量和计算表明，足趾的背屈使足底筋膜收紧(绞车效应)，并增加了跟腱张力对足底筋膜的拉伸应变和张力的影响。
We carried out an experiment to measure the relationship between tensile force in the tendoachilles and plantar fascia strain, and how this relationship is affected by the metatarsophalangeal joint dorsiflexion angle. Eight cadaver lower extremity specimens underwent biomechanical testing. Using a servo-hydraulic testing machine, a tensile force up to 500 N was applied to the tendoachilles while the strain on the plantar fascia was measured using an extensometer. The experiment was repeated at four different metatarsophalangeal joint dorsiflexion angles (0 degrees, 5 degrees, 30 degrees, and 45 degrees). Measurements and calculations showed that dorsiflexion of the toes tightens the plantar fascia (the windlass effect) and increases the effect that a tensile force in the tendoachilles has on the tensile strain and tensile force in the plantar fascia.