4.6 Article

Video analysis of trunk and knee motion during non-contact anterior cruciate ligament injury in female athletes: lateral trunk and knee abduction motion are combined components of the injury mechanism

期刊

BRITISH JOURNAL OF SPORTS MEDICINE
卷 43, 期 6, 页码 417-422

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BMJ PUBLISHING GROUP
DOI: 10.1136/bjsm.2009.059162

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资金

  1. NIH/NIAMS [R01 AR049735, R01 AR05563, R01 AR056259]

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Background: The combined positioning of the trunk and knee in the coronal and sagittal planes during non-contact anterior cruciate ligament (ACL) injury has not been previously reported. Hypothesis: During ACL injury female athletes demonstrate greater lateral trunk and knee abduction angles than ACL-injured male athletes and uninjured female athletes. Design: Cross-section control-cohort design. Methods: Analyses of still captures from 23 coronal (10 female and 7 male ACL-injured players and 6 female controls) or 28 sagittal plane videos performing similar landing and cutting tasks. Significance was set at p <= 0.05. Results: Lateral trunk and knee abduction angles were higher in female compared to male athletes during ACL injury (p <= 0.05) and trended toward being greater than female controls (p= 0.16, 0.13, respectively). Female ACL-injured athletes showed less forward trunk lean than female controls (mean (SD) initial contact (IC): 1.6 (9.3)degrees vs 14.0 (7.3)degrees, p <= 0.01). Conclusion: Female athletes landed with greater lateral trunk motion and knee abduction during ACL injury than did male athletes or control females during similar landing and cutting tasks. Clinical relevance: Lateral trunk and knee abduction motion are important components of the ACL injury mechanism in female athletes as observed from video evidence of ACL injury.

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