Zhou Jun, Schilaty Nathan D, Hewett Timothy E, Bates Nathaniel A
Int J Sports Phys Ther. 2020 Apr;15(2):254-262.
Anterior cruciate ligament (ACL) injuries are a common cause of time loss in sports. Approximately one-third of ACL reconstructed athletes who return to sport suffer secondary injury. The presence of fatigue during athletic performance has been hypothesized to increase susceptibility to ACL injury. However, the relative role of fatigue in secondary ACL failures remains unexplored.
To assess how time elapsed within a game and within a season associate with secondary ACL injury occurrence in international professional athletes and American collegiate athletes.
Retrospective cohort analysis.
The public domain was searched for secondary ACL injuries that occurred during competitive matches between 2000-2018. Demographics (age, height, weight), side of injury, type of injury (contact, noncontact), and timing of injury within competition and within season were determined for each case.
Sixty-seven secondary ACL injuries were identified. Within-game, there were no differences in the distribution of ACL injures across each quarter of game time (p = 0.284). This was consistent between sport (p = 0.120-0.448). Within-season, there were no differences in the distribution of secondary ACL injures across each quarter of the season (p = 0.491). This was again consistent between sport (p = 0.151-0.872). Relative risk was not found to be significantly greater for any combination of season and game.
The results of the current study indicate that the occurrences of secondary ACL injuries were equally distributed with respect to in-game and in-season timing. Both in-game and in-season timing were not significantly different across each individual sport examined. These results implicate that overall there is not an association between fatigue and secondary ACL injury occurrence in professional athletes.
前交叉韧带（ACL）损伤是导致运动员运动时间减少的常见原因。约三分之一接受ACL重建并重返运动的运动员会遭受二次损伤。运动表现过程中疲劳的存在被认为会增加ACL损伤的易感性。然而，疲劳在二次ACL损伤中的相对作用仍未得到探索。
评估比赛期间和赛季期间的时间流逝与国际职业运动员和美国大学运动员二次ACL损伤发生之间的关联。
回顾性队列分析。
在公共领域搜索2000年至2018年期间在竞技比赛中发生的二次ACL损伤。确定每个病例的人口统计学特征（年龄、身高、体重）、损伤侧、损伤类型（接触性、非接触性）以及比赛期间和赛季内的损伤时间。
共识别出67例二次ACL损伤。在比赛中，每季度比赛时间内ACL损伤的分布没有差异（p = 0.284）。各运动项目之间情况一致（p = 0.120 - 0.448）。在赛季内，每个赛季季度中二次ACL损伤的分布没有差异（p = 0.491）。各运动项目之间同样一致（p = 0.151 - 0.872）。未发现赛季和比赛的任何组合的相对风险显著更高。
本研究结果表明，二次ACL损伤的发生在比赛期间和赛季期间的时间分布上是均匀的。在所检查的每个单项运动中，比赛期间和赛季期间的时间分布均无显著差异。这些结果表明，总体而言，职业运动员的疲劳与二次ACL损伤的发生之间没有关联。
3级。
