Carter Sarah L, Bryant Alan R, Hopper Luke S
J Am Podiatr Med Assoc. 2017 Jul;107(4):292-298. doi: 10.7547/15-142.
Turnout in ballet is produced through summation of the joint structure characteristics and ranges of motion at the hip, knee, ankle, and foot. Contributions of the hip joint to functional turnout in dancers have received extensive examination, whereas little is known about contributions from the knee, ankle, and foot. The aim of this study was to explore the nonhip components of turnout to dancers' functional turnout in first position by assessing passive external tibiofemoral rotation and active measures of foot pronation, ie, navicular drop and Foot Posture Index.
Nineteen female university-level dance students aged 16 to 19 years participated in this descriptive correlational study. External tibiofemoral rotation, navicular drop, Foot Posture Index, and functional turnout were measured for the participants' right and left legs.
Regression analyses revealed a weak relationship between passive external tibiofemoral rotation and functional turnout. Correlation analysis revealed a moderate negative relationship between passive tibiofemoral external rotation and the Foot Posture Index in functional turnout.
These findings suggest that the lower leg does contribute to dancers' overall position of functional turnout. However, current methods are not useful in predicting a dancer's lower-leg contribution and alignment in functional turnout in first position.
芭蕾舞中的外开是通过髋关节、膝关节、踝关节和足部的关节结构特征及活动范围的总和产生的。髋关节对舞者功能性外开的贡献已得到广泛研究，而关于膝关节、踝关节和足部的贡献却知之甚少。本研究的目的是通过评估被动性胫股外旋以及足内翻的主动测量指标，即舟骨下降和足姿势指数，来探究外开中髋关节以外的部分对舞者一位站立时功能性外开的影响。
19名年龄在16至19岁的大学水平女性舞蹈学生参与了这项描述性相关性研究。对参与者的左右腿测量胫股外旋、舟骨下降、足姿势指数和功能性外开。
回归分析显示被动性胫股外旋与功能性外开之间存在微弱关系。相关性分析显示，在功能性外开中，被动性胫股外旋与足姿势指数之间存在中度负相关。
这些发现表明小腿确实对舞者功能性外开的整体姿势有影响。然而，目前的方法对于预测舞者一位站立时功能性外开中小腿的贡献和排列并无帮助。
