Foot Supination Ability Affecting Pointe Stability
Quentin Yau - Registered Physiotherapist (HK)
Translation: Stacey Yeung - Dance Science Researcher
14 April 2020
A dancer complains having difficulty getting into pointe position on her left foot.
She presents with a more muscular on the left thigh and weakness/ instability on left pointe position. She had a history of a minor ankle sprain in a year ago. There was no pain.
On examination, we discovered that,
Her ankle structure and mobility are satisfactory; however, the mid-foot supination ability is compromised with locking in the cuboid. With her cuboid being immobile, the form closure of the foot was incomplete during pointe, which means she needs extra support from the muscles to complete the stance.
In triple extension, it is obvious that her ankle part does not reach full planter flexion in high speed, which indicates that the soft tissue length is compromised, limiting her joint motion range.
For the pre and post-treatment, neuromuscular training focused on knee-ankle communication was recommended.
Because it is a “closed kinetic chain”, foot mobility should be evaluated when ankle motion is limited.
Joint coupling and soft tissue length should be restored in order to allow full function of the limbs.
“Form closure” is a key for stability, or else “force closure” will have to contribute excessively, leading to early fatigue and injury.
作者：邱啟政 - 香港註冊物理治療師
中文翻譯：楊子慧 - 舞蹈科學研究員
Russell, J. (2015). Insights into the Position of the Ankle and Foot in Female Ballet Dancers En Pointe. The IADMS Bulletin for Dancers and Teachers, 6(1).
Vleeming, A., & Schuenke, M. (2019). Form and force closure of the sacroiliac joints. PM&R, 11, S24-S31.
This article was accomplished by the author in his/her personal capacity. The opinions expressed in this article do not reflect the view of the official statement of CUHK and HKADMS. It is intended for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult with an appropriate professional for specific advice related to your situation.
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