We used image-processing techniques to determine the moment (i.e., image frame) of the Achilles tendon (AT) rupture in an Olympic sprinter. This report may be unique due to the difficulty in conducting motion capture analyses during injury events. Our report includes one female Olympic sprinter, 29 years old (body mass: 56 kg, height: 1.68 m, and body mass index: 19.8 kg/m²) with a high-competitive profile history (2008 and 2012 Olympic Games participation; South American record holder in 100- and 200-m; Pan-American gold medalist in 200-m and 4 × 100-m relay) who suffered a complete AT rupture in the left leg while exercising in the final phase of rehabilitation following an Achilles tendinopathy in the contralateral limb. The greater dorsiflexion found at the moment of the injury and the delayed control of heel position indicated the presence of uncontrolled dorsiflexion, which potentially generated excessive eccentric stress over the tendon and, thus, the AT rupture. Here we discuss the relevance of lower leg alignment, the movements’ characteristics, and the history of Achilles tendinopathy in the contralateral leg on the occurrence of the AT rupture.

我们使用图像处理技术来确定奥林匹克短跑运动员中跟腱（AT）破裂的时刻（即图像帧）。由于在受伤事件中难以进行运动捕捉分析，因此该报告可能是唯一的。我们的报告包括一名29岁的女子奥林匹克短跑选手（体重：56公斤，身高：1.68 m，体重指数：19.8 kg / m ²）具有高度竞争性的历史记录（参加2008年和2012年奥运会；南美100米和200米纪录保持者；泛美200米和4×100米接力金牌获得者）对侧肢腱跟腱病后，在康复的最后阶段锻炼时左腿破裂。在受伤时发现较大的背屈和延迟的脚跟位置控制表明存在不受控制的背屈，这可能在肌腱上产生过多的偏心应力，从而导致AT断裂。在这里，我们讨论在AT破裂发生时小腿对侧小腿对准，运动特征以及跟腱病史的相关性。