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Prevalence and unique patterns of lower limb hypermobility in elite ballet dancers
Katie Phan1, Leslie L Nicholson2, Claire E Hiller1
1The University of Sydney, School of Health Sciences, Faculty of Medicine and Health, Australia.
Objectives:
Determine the prevalence of lower limb hypermobility in elite dancers and secondarily to describe the patterns of mobility.
Design:
Cross sectional.
Setting:
Self-report questionnaires and physical assessments were undertaken at a tertiary dance institution and a professional ballet company.
Participants:
Fifty-seven pre-professional and 29 professional ballet dancers (21±4years, 64% female, mean 13.7years training) were recruited.
Main Outcome Measures:
Lower Limb Assessment Score (LLAS) was used to assess hypermobility. Prevalence was determined by descriptive statistics, between-leg and -group comparisons were analysed using the chi-square statistic and the pattern of mobility by cluster analyses.
Results:
The right leg was significantly more hypermobile than the left for the whole cohort (44% vs 40% meeting ≥7/12 for the LLAS; LLAS mean/12(SD): right:5.0(2.4) and 7.6(1.9); left:4.8(2.1) and 6.7(2.0) in pre-professionals and professionals respectively (p = 0.02)). Subtalar pronation (p < 0.001) and hip abduction/external rotation (left:p = 0.01; right:p < 0.001) were significantly more hypermobile bilaterally in professionals. Three hypermobility profiles on the left and four on the right lower limb were identified.
Conclusions:
This paper presents unique lower limb hypermobility profiles identified in elite dancers.

