Manfredi-Márquez María José, Tovaruela-Carrión Natalia, Távara-Vidalón Priscila, Domínguez-Maldonado Gabriel, Fernández-Seguín Lourdes María, Ramos-Ortega Javier
Department of Podiatry, Universidad de Sevilla, Seville, Spain.
Department of Physiotherapy, Universidad de Sevilla, Seville, Spain.
PeerJ. 2017 Dec 18;5:e4103. doi: 10.7717/peerj.4103. eCollection 2017.
The windlass mechanism was described as the effect caused by the extension of the first metatarsalphalangeal joint (1st MTPJ). Quantify the degrees of movement produced in the leg by means of the Bioval® sensor system, after performing two measurements in the 1st MTPJ, 45° extension and maximum extension.
Tests-post-test study with just one intervention group, performed in the Clinical Podiatry Area of the Faculty of Nursing, Physiotherapy and Podiatry of the University of Seville. Subjects were included as of age 20, with a value from 0° to 3° valgus, Helbing line, a value from 0° to +5° for the foot postural index, and a localisation axis for the normalised subtalar joint. Subjects with surgical operations of the first ray, fractures and surgical operations in the leg, pathologies in the first ray and rheumatic diseases were excluded. Measurement was performed with the Bioval® system by means of inserting four sensors in the bone structures involved in the windlass mechanism.
With the 45° wedge we observed a direct correlation among the variables extension-plantar flexion 1st MTPJ and rotation of the femur. With maximal extension of the 1st MTPJ we obtained a direct relationship between the variable extension of the 1st MTPJ and the variables plantar flexion and prono-supination of the 1st metatarsal as well as with the variables tibia rotation and femur rotation.
Kinematic analysis suggested that the higher the degree of extension the more movement will be generated. This reduces the level of impact the more distal the structure with respect to the 1st MTPJ, which has an impact on the entire leg. Because of the kinematic system used wasn't suitable, its impact wasn't exactly quantified.
绞盘机制被描述为第一跖趾关节（第1 MTPJ）伸展所产生的效应。在第1 MTPJ进行45°伸展和最大伸展的两次测量后，通过Bioval®传感器系统量化腿部产生的运动度数。
仅对一个干预组进行测试后测试研究，在塞维利亚大学护理、物理治疗和足病学系的临床足病学领域进行。纳入年龄在20岁及以上的受试者，其外翻角度为0°至3°（赫尔宾线），足部姿势指数为0°至 +5°，距下关节归一化定位轴正常。排除第一跖骨有手术史、腿部骨折和手术史、第一跖骨病变以及风湿性疾病的受试者。通过在参与绞盘机制的骨骼结构中插入四个传感器，使用Bioval®系统进行测量。
使用45°楔形物时，我们观察到第1 MTPJ伸展 - 跖屈变量与股骨旋转之间存在直接相关性。在第1 MTPJ最大伸展时，我们获得了第1 MTPJ伸展变量与第1跖骨的跖屈和旋前 - 旋后变量以及胫骨旋转和股骨旋转变量之间的直接关系。
运动学分析表明，伸展程度越高，产生的运动就越多。相对于第1 MTPJ，结构越靠远端，冲击力水平降低得越多，这对整个腿部都有影响。由于所使用的运动学系统不合适，其影响未被精确量化。
