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Video Analysis of Shoulder Dislocations in Rugby: Insights Into the Dislocating Mechanisms.
The American Journal of Sports Medicine ( IF 4.8 ) Pub Date : 2019-11-11 , DOI: 10.1177/0363546519882412
Connor Montgomery 1, 2 , David E O'Briain 1 , Eoghan T Hurley 1, 3 , Leo Pauzenberger 1 , Hannan Mullett 1 , Cathal J Moran 1, 2
Affiliation  

Background:

Mechanisms previously described for traumatic shoulder injuries in rugby may not adequately describe all the mechanisms that result in shoulder dislocations.

Purpose:

To investigate the mechanism of shoulder dislocation events in professional rugby players through use of systematic video analysis.

Study Design:

Case series; Level of evidence, 4.

Methods:

In our series, 39 cases of shoulder dislocations from games played in top professional leagues and international matches across a 2-year period were available for video analysis. All cases were independently assessed by 2 analysts to identify the sequence of events occurring during shoulder dislocation. This included injury circumstance such as contact with another player or the ground, game scenario, injury timing, and the movements and force vectors involved in the dislocation mechanism.

Results:

We identified 4 distinct injury mechanisms. The previously described mechanisms “try scorer,”“tackler,” and “direct impact” were identified in 67% of cases. We describe a new injury mechanism occurring in the “poach position,” accounting for 18% of all shoulder dislocations studied. The remaining 15% could not be categorized. Shoulder dislocations occurred to a ball carrier in 15% of cases (n = 6) and a non–ball carrier in 85% of cases (n = 33). The injury most commonly occurred during a tackle (49%; n = 19) followed by ruck/maul (26%; n = 10). Time of injury showed that 36% (n = 14) of cases occurred in the last quarter of the game.

Conclusion:

Shoulder dislocations have now been shown to occur predominantly as a result of 1 of 4 distinct mechanisms, most frequently in the second half of the game. A new mechanism for shoulder dislocation has been described in this series, termed the poach position.



中文翻译:

橄榄球中肩关节脱位的视频分析:脱位机制的见解。

背景:

先前描述的橄榄球中肩部创伤的机制可能不足以描述导致肩关节脱位的所有机制。

目的:

通过使用系统的视频分析来调查职业橄榄球运动员中肩关节脱位事件的机制。

学习规划:

案例系列;证据水平4。

方法:

在我们的系列视频中,有2年期间有39例顶级职业联赛和国际比赛的比赛中肩膀脱臼的情况可供视频分析。所有病例均由2位分析师独立评估,以确定肩关节脱位期间发生的事件顺序。这包括受伤情况,例如与其他玩家或地面接触,比赛场景,受伤时机以及错位机制中涉及的运动和力矢量。

结果:

我们确定了4种不同的损伤机制。在67%的案例中,确定了先前描述的“尝试评分器”,“处理者”和“直接影响”机制。我们描述了一种新的损伤机制,该现象发生在“荷包姿势”中,占研究的所有肩关节脱位的18%。其余15%无法分类。15%(n = 6)的病例中,球支架发生肩关节脱位; n%(33),85%的患者非肩关节脱位。伤害最常见的是在铲球期间(49%; n = 19),然后是翻车/槌击(26%; n = 10)。受伤时间表明,比赛的最后一个季度发生了36%(n = 14)的案件。

结论:

现在已经表明,肩关节脱位主要是4种不同机制中的1种导致的,最常见于比赛的下半场。在这个系列中已经描述了一种新的肩关节脱位机制,称为“偷猎姿势”。

更新日期:2019-11-11
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