Grassi Alberto, Smiley Stephen Paul, Roberti di Sarsina Tommaso, Signorelli Cecilia, Marcheggiani Muccioli Giulio Maria, Bondi Alice, Romagnoli Matteo, Agostini Alessandra, Zaffagnini Stefano
Dipartimento Rizzoli Sicilia, Istituto Ortopedico Rizzoli, Bagheria, Palermo, Italy.
Laboratorio di Biomeccanica ed Innovazione Teconolgica, Istituto Ortopedico Rizzoli, Bologna, Italy.
Eur J Orthop Surg Traumatol. 2017 Oct;27(7):967-981. doi: 10.1007/s00590-017-1905-0. Epub 2017 Jan 25.
Soccer is considered the most popular sport in the world concerning both audience and athlete participation, and the incidence of ACL injury in this sport is high. The understanding of injury situations and mechanisms could be useful as substratum for preventive actions.
To conduct a video analysis evaluating the situations and mechanisms of ACL injury in a homogeneous population of professional male soccer players, through a search entirely performed on the YouTube.com Web site focusing on the most recent years.
A video analysis was conducted obtaining videos of ACL injury in professional male soccer players from the Web site YouTube. Details regarding injured players, events and situations were obtained. The mechanism of injury was defined on the basis of the action, duel type, contact or non-contact injury, and on the hip, knee and foot position.
Thirty-four videos were analyzed, mostly from the 2014-2015 season. Injuries occurred mostly in the first 9 min of the match (26%), in the penalty area (32%) or near the side-lines (44%), and in non-rainy conditions (97%). Non-contact injuries occurred in 44% of cases, while indirect injuries occurred in 65%, mostly during pressing, dribbling or tackling. The most recurrent mechanism was with an abducted and flexed hip, with knee at first degrees of flexion and under valgus stress.
Through a YouTube-based video analysis, it was possible to delineate recurrent temporal, spatial and mechanical characteristics of ACL injury in male professional soccer players.
Level IV, case series.
就观众数量和运动员参与度而言，足球被认为是世界上最受欢迎的运动，并且这项运动中前交叉韧带（ACL）损伤的发生率很高。了解损伤情况和机制可能有助于作为预防措施的基础。
通过在YouTube.com网站上进行的一项完全聚焦于最近几年的搜索，对一组同质的职业男性足球运动员进行视频分析，以评估ACL损伤的情况和机制。
进行了一项视频分析，从YouTube网站获取职业男性足球运动员ACL损伤的视频。获取了有关受伤球员、事件和情况的详细信息。根据动作、对抗类型、接触或非接触损伤以及髋、膝和足部位置来定义损伤机制。
分析了34个视频，大部分来自2014 - 2015赛季。损伤大多发生在比赛的前9分钟（26%）、罚球区内（32%）或边线附近（44%），且在无雨条件下（97%）。44%的病例为非接触损伤，65%为间接损伤，大多发生在逼抢、盘带或铲球过程中。最常见的机制是髋外展且屈曲，膝关节处于初始屈曲角度并承受外翻应力。
通过基于YouTube的视频分析，有可能描绘出男性职业足球运动员ACL损伤反复出现的时间、空间和力学特征。
IV级，病例系列。
