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Similar prevalence of acetabular labral tear in professional ballet dancers and sporting participants

Mayes, Susan, Ferris, April-Rose, Smith, Peter, Garnham, Andrew and Cook, Jill 2016, Similar prevalence of acetabular labral tear in professional ballet dancers and sporting participants, Clinical journal of sport medicine, vol. 26, no. 4, pp. 307-313, doi: 10.1097/JSM.0000000000000257.

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Title Similar prevalence of acetabular labral tear in professional ballet dancers and sporting participants
Author(s) Mayes, Susan
Ferris, April-Rose
Smith, Peter
Garnham, Andrew
Cook, Jill
Journal name Clinical journal of sport medicine
Volume number 26
Issue number 4
Start page 307
End page 313
Total pages 7
Publisher Lippincott Williams and Wilkins
Place of publication Philadelphia, Pa.
Publication date 2016-07
ISSN 1536-3724
1536-3724
Summary OBJECTIVE: To compare the prevalence of acetabular labral tear in male and female professional ballet dancers with age-matched and sex-matched sporting participants and to determine the relationship to clinical findings and cartilage defects. DESIGN: Case-control study. SETTING: Clinical and radiology practices. PARTICIPANTS: Forty-nine (98 hips) male and female professional ballet dancers (current and retired) with median age 30 years (range: 19-64 years) and 49 (98 hips) age-matched and sex-matched sporting participants. INDEPENDENT VARIABLES: Group (ballet or sports), sex, age, hip cartilage defects, history of hip pain, Hip and Groin Outcome Score, passive hip internal rotation (IR), and external rotation range of movement (ROM). MAIN OUTCOME MEASURES: Labral tear identified with 3T magnetic resonance imaging (MRI). RESULTS: Labral tears were identified in 51% of all 196 hips. The prevalence did not differ significantly between the ballet and sporting participants (P = 0.41) or between sexes (P = 0.34). Labral tear was not significantly associated with clinical measures, such as pain and function scores or rotation ROM (P > 0.01 for all). Pain provocation test using IR at 90° of hip flexion had excellent specificity [96%, 95% confidence intervals (CIs), 0.77%-0.998%] but poor sensitivity (50%, 95% CI, 0.26%-0.74%) for identifying labral tear in participants reporting hip pain. Older age and cartilage defect presence were independently associated with an increased risk of labral tear (both P < 0.001). CONCLUSIONS: The prevalence of labral tear in male and female professional ballet dancers was similar to a sporting population. Labral tears were not associated with clinical findings but were related to cartilage defects, independent of aging. CLINICAL RELEVANCE: Caution is required when interpreting MRI findings as labral tear may not be the source of the ballet dancer's symptoms.
Language eng
DOI 10.1097/JSM.0000000000000257
Field of Research 1106 Human Movement And Sports Science
Socio Economic Objective 929999 Health not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Lippincott Williams and Wilkins
Persistent URL http://hdl.handle.net/10536/DRO/DU:30082198

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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