Mechanisms of ACL injury in professional rugby union: a systematic video analysis of 36 cases
(Mechanismen von Kreuzbandverletzungen im professionellen Rugby: eine systematische Videoanalyse von 36 Fällen)
Background: The mechanisms of ACL injury in rugby are not well defined.
Aim: To describe the mechanisms of ACL injury in male professional rugby players using systematic video analysis.
Methods: 36 cases from games played in top professional leagues and international matches were analysed. 5 analysts independently assessed all videos to record the estimated frame/time of initial ground contact, frame/time of ACL tear and a range of play specific variables. This included contact versus non-contact ACL injuries, injury timing, joint flexion angles and foot contact with the ground. 37 side-stepping manoeuvres from a control game were analysed to allow comparison of non-injury versus injury situations.
Results: 57% of ACL injuries occurred in a contact manner. 2 main scenarios were identified: (1) offensive running and (2) being tackled, indicating that the ball carrier might be at higher risk of ACL injury. The majority of non-contact ACL injuries resulted from a side-stepping manoeuvre. In most non-contact cases, initial ground contact was through heel strike. Statistical assessment of heel strike at initial ground contact versus non-heel strike cases showed a significant difference in injury versus non-injury outcomes, with heel strike associated with higher injury risk. Non-contact ACL injuries had lower median knee flexion angles and a more dorsiflexed ankle when compared with a control group (10° vs 20°, p=0.001 and 10° vs 0°, p=0.033 respectively).
Conclusions: Over half of ACL injuries in rugby in our analysis resulted from a contact mechanism. For non-contact injuries, lower knee flexion angles and heel-first ground contact in a side-stepping manoeuvre were associated with ACL injury.
© Copyright 2018 British Journal of Sports Medicine. BMJ Publishing Group Ltd of the BMA. Alle Rechte vorbehalten.
Schlagworte: | Sportmedizin Rugby Verletzung Knie Analyse Video |
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Notationen: | Biowissenschaften und Sportmedizin Spielsportarten |
DOI: | 10.1136/bjsports-2016-096425 |
Veröffentlicht in: | British Journal of Sports Medicine |
Veröffentlicht: |
2018
|
Jahrgang: | 52 |
Heft: | 15 |
Seiten: | 994-1001 |
Dokumentenarten: | Artikel |
Sprache: | Englisch |
Level: | hoch |