Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; Office of Student Affairs, Lingnan University, Hong Kong; Department of Health and Physical Education, The Education University of Hong Kong, Hong Kong.
Department of Orthopaedics and Traumatology, Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong; Department of Health and Physical Education, The Education University of Hong Kong, Hong Kong.
Foot (Edinb). 2021 Sep;48:101853. doi: 10.1016/j.foot.2021.101853. Epub 2021 Jul 12.
Ankle sprain is very common in sports. Research on its prevention is as important as on its treatment as recommended in the 2016 consensus statement of the International Ankle Consortium. Successful prevention depends on the understanding of its mechanism, which has been presented with quantities in some recent case reports. Inciting event was suggested to be an inverted ankle joint at foot strike, however, is still lacking evidence from comparison with non-injury trials. This study investigated the ankle joint orientation at foot strike in successful non-injury cases and compared them with a previously analysed ankle sprain injury case. Two injury-free cutting motions with similar movement approach to a previously analysed ankle sprain injury performed by the same athlete were collected from an online search and were trimmed from 0.05 s before until 0.30 s after the foot strike. The video sequences were then processed by video editing software and then analysed by a model-based image-matching motion analysis technique. Ankle joint orientation at foot strike and the profiles were presented in inversion, plantarflexion and rotation planes, for both the previously analysed injury case and the two non-injury cases. The ankle joint orientation at foot strike was 0-1 degree inverted and 10-21° dorsiflexed in the two non-injury cases, compared to 14° inverted and 16° plantarflexed in the previously analysed injury case. From the case comparison, it can be observed that an inverted ankle joint orientation at foot strike in an inciting event of ankle inversion sprain.
踝关节扭伤在体育运动中很常见。正如 2016 年国际踝关节联合会共识声明所建议的那样，对其预防的研究与治疗同样重要。成功的预防取决于对其机制的理解，一些最近的病例报告已经提出了一些定量的机制。诱发事件被认为是足着地时踝关节内翻，但与非损伤试验相比，这仍然缺乏证据。本研究调查了足着地时成功非损伤病例的踝关节方向，并将其与之前分析的踝关节扭伤损伤病例进行了比较。从在线搜索中收集了两名与之前分析的踝关节扭伤损伤病例相似的运动方式的无损伤切割运动，并从足着地前 0.05 秒修剪到足着地后 0.30 秒。然后使用视频编辑软件对视频序列进行处理，然后使用基于模型的图像匹配运动分析技术进行分析。在之前分析的损伤病例和两个无损伤病例中，分别在内翻、跖屈和旋转平面上呈现了足着地时的踝关节方向和轮廓。在两个无损伤病例中，足着地时的踝关节方向为 0-1 度内翻和 10-21°背屈，而在之前分析的损伤病例中为 14°内翻和 16°跖屈。从病例比较中可以看出，在踝关节内翻扭伤的诱发事件中，足着地时踝关节处于内翻状态。
