Background Knee injuries are the most common type of injury seen in the Women's National Basketball Association (WNBA). However, there are sparse epidemiologic data regarding these injuries over the past 20 years. Purpose/Hypothesis The purpose of this study was to determine the prevalence, return to play (RTP) rate/length, and mechanism of knee injuries in the WNBA. We hypothesized that anterior cruciate ligament (ACL) tears would have the highest prevalence and longest RTP times. Study Design Descriptive epidemiology study. Methods Publicly available WNBA injury reports were used to find WNBA athletes who sustained knee injuries. The RTP length was determined by calculating the number of days between the date of the injury and the date of the first game they played after returning. The RTP rate was determined by calculating the number of players who returned to play from each injury compared with the total number of each injury. Incidence of knee injuries, frequency, and time to RTP were calculated for each injury. Available videos were analyzed to determine the mechanism and body position at the time of injury. Results Overall, 99 WNBA players were identified as having sustained a knee injury during the study period resulting in loss of play. ACL tears (n = 37; 37%) were the most devastating injury, resulting in the longest time before RTP (n = 375 days; 70%). The position with the highest incidence of knee injuries was guard, accounting for 53% of knee injuries. Video analysis conducted on 12 knee injuries revealed that such injuries were most commonly noncontact (83%).The mechanisms of injury were most commonly planting (58%) and landing from a jump (33%) with the knee flexed in the valgus position (100%). Conclusion Study findings indicated that ACL tears are the most common clinically significant knee injuries sustained in the WNBA, accounting for 37% of total knee injuries with a mean RTP rate of 375 days. The most common mechanism of injury was planting the foot or landing from a jump with a flexed knee in the valgus position. Knee injuries had a high RTP rate in WNBA players but resulted in them missing a significant amount of playing time.

中文翻译：

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全国女子篮球协会膝关节损伤视频分析的流行病学。

背景 膝关节损伤是女子国家篮球协会 (WNBA) 中最常见的损伤类型。然而，在过去 20 年中，关于这些损伤的流行病学数据很少。目的/假设 本研究的目的是确定 WNBA 中膝关节损伤的患病率、重返赛场 (RTP) 率/长度和机制。我们假设前交叉韧带 (ACL) 撕裂的患病率最高，RTP 时间最长。研究设计 描述性流行病学研究。方法 使用公开的 WNBA 伤病报告来寻找膝盖受伤的 WNBA 运动员。RTP 长度是通过计算受伤日期和他们返回后第一场比赛日期之间的天数来确定的。RTP 率是通过计算每次受伤后重返赛场的球员人数与每次受伤总数的比较来确定的。计算每种损伤的膝关节损伤发生率、频率和达到 RTP 的时间。分析可用视频以确定受伤时的机制和身体位置。结果 总体而言，99 名 WNBA 球员被确定在研究期间因膝伤而失去比赛。ACL 撕裂（n = 37；37%）是最具破坏性的损伤，导致 RTP 前的时间最长（n = 375 天；70%）。膝伤发生率最高的位置是后卫，占膝伤的53%。对 12 例膝关节损伤进行的视频分析显示，此类损伤最常见的是非接触性损伤（83%）。最常见的损伤机制是着地（58%）和跳跃着地（33%），膝盖在外翻位置弯曲（100%）。结论 研究结果表明，ACL 撕裂是 WNBA 中最常见的具有临床意义的膝关节损伤，占膝关节总损伤的 37%，平均 RTP 率为 375 天。最常见的损伤机制是在外翻位置屈膝跳跃时着地或着地。膝伤在 WNBA 球员中的 RTP 率很高，但导致他们错过了大量的上场时间。占膝关节总损伤的 37%，平均 RTP 率为 375 天。最常见的损伤机制是在外翻位置屈膝跳跃时着地或着地。膝伤在 WNBA 球员中的 RTP 率很高，但导致他们错过了大量的上场时间。占膝关节总损伤的 37%，平均 RTP 率为 375 天。最常见的损伤机制是在外翻位置屈膝跳跃时着地或着地。膝伤在 WNBA 球员中的 RTP 率很高，但导致他们错过了大量的上场时间。