Department of Anatomy, Catholic Institute for Applied Anatomy,College of Medicine, The Catholic University of Korea , Seoul , Republic of Korea.
Department of Radiology, Seoul St. Mary's Hospital, The Catholic University of Korea , Seoul , Republic of Korea.
Sports Biomech. 2019 Dec;18(6):587-594. doi: 10.1080/14763141.2018.1452967. Epub 2018 May 16.
Ballerinas use their ankle joints more extremely and sustain injuries on the ankle joint more frequently than non-dancers. Therefore, the ankle movement of dancers is important and should be studied to prevent injuries. Measuring ankle joint range of motion (ROM) using radiographs could demonstrate the contribution to motion of each joint. The aim of this study was to analyse and compare ankle joint movements and the ratio of each joint's contribution during movement between dancers and non-dancers, using radiographic images. Dancers have lower dorsiflexion (26.7 ± 6.2°), higher plantarflexion (74.3 ± 7.1°) and higher total (101.1 ± 10.8°) ROMs than non-dancers (33.9 ± 7.0°, 57.2 ± 6.8° and 91.1 ± 9.3°, respectively) ( < 0.05). Although the ROMs were different between the two groups, the ratios of each joint movement were similar between these two groups, in all movements. Regarding total movement, the movement ratio of the talocrural joint was almost 70% and other joints accounted for almost 30% of the movement role in both dancers and non-dancers. Therefore, the differences in ROM between dancers and non-dancers were not a result of a specific joint movement but of all the relevant joints' collaborative movement.
芭蕾舞演员的踝关节比非舞者更极端地使用，并且更频繁地在踝关节受伤。因此，舞者的踝关节运动很重要，应该进行研究以预防受伤。使用射线照相术测量踝关节活动范围（ROM）可以证明每个关节对运动的贡献。本研究的目的是通过射线照相分析和比较舞者和非舞者的踝关节运动以及运动过程中每个关节的贡献比例。与非舞者（33.9 ± 7.0°，57.2 ± 6.8°和 91.1 ± 9.3°）相比，舞者具有较低的背屈（26.7 ± 6.2°），较高的跖屈（74.3 ± 7.1°）和较高的总 ROM（101.1 ± 10.8°）（<0.05）。尽管两组之间的 ROM 不同，但在所有运动中，两个组之间的每个关节运动的比例相似。关于总运动，距下关节的运动比例几乎为 70％，而其他关节在舞者和非舞者中几乎占运动作用的 30％。因此，舞者和非舞者之间的 ROM 差异不是特定关节运动的结果，而是所有相关关节的协同运动的结果。
