Russell Jeffrey A, Shave Ruth M, Kruse David W, Nevill Alan M, Koutedakis Yiannis, Wyon Matthew A
Department of Dance, University of California - Irvine, Irvine, California, USA.
Foot Ankle Spec. 2011 Jun;4(3):151-6. doi: 10.1177/1938640010397343. Epub 2011 Mar 2.
Female ballet dancers require extreme ankle motion to attain the demi-plié (weight-bearing full dorsiflexion [DF]) and en pointe (weight-bearing full plantar flexion [PF]) positions of ballet. However, techniques for assessing this amount of motion have not yet received sufficient scientific scrutiny. Therefore, the purpose of this study was to examine possible differences between weight-bearing goniometric and radiographic ankle range of motion measurements in female ballet dancers. Ankle range of motion in 8 experienced female ballet dancers was assessed by goniometry and 2 radiographic measurement methods. The latter were performed on 3 mediolateral x-rays, in demi-plié, neutral, and en pointe positions; one of them used the same landmarks as goniometry. DF values were not significantly different among the methods, but PF values were (P < .05). Not only was PF of the talocrural joint significantly less than the other 2 measurements (P < .001), PF from the goniometric method applied to the x-rays was significantly less than PF obtained from clinical goniometry (P < .05). These data provide insight into the extreme ankle and foot motion, particularly PF, required in female ballet dancers and suggest that goniometry may not be ideal for assessing ankle range of motion in these individuals. Therefore, further research is needed to standardize how DF and PF are measured in ballet dancers.
Diagnostic, Level I.
女性芭蕾舞演员需要踝关节有极大的活动度才能达到芭蕾舞的半蹲位（负重下全背屈[DF]）和足尖位（负重下全跖屈[PF]）。然而，评估这种活动度的技术尚未得到充分的科学审视。因此，本研究的目的是检验女性芭蕾舞演员负重下角度测量法与X线测量法在踝关节活动度测量上可能存在的差异。通过角度测量法和两种X线测量方法对8名经验丰富的女性芭蕾舞演员的踝关节活动度进行了评估。后两种方法是在半蹲位、中立位和足尖位的3张内外侧X线片上进行的；其中一种方法使用了与角度测量法相同的标志点。各方法间的DF值无显著差异，但PF值有差异（P < 0.05）。不仅距小腿关节的PF显著小于其他两种测量值（P < 0.001），应用于X线片的角度测量法得出的PF也显著小于临床角度测量法得出的PF（P < 0.05）。这些数据有助于深入了解女性芭蕾舞演员所需的踝关节和足部的极大活动度，尤其是PF，并表明角度测量法可能并非评估这些个体踝关节活动度的理想方法。因此，需要进一步研究来规范芭蕾舞演员DF和PF的测量方法。
诊断性，I级。
