Dewan V, Webb M S L, Prakash D, Malik A, Gella S, Kipps C
Department Of Trauma & Orthopaedics, Royal Wolverhampton NHS Trust, Wolverhampton, UK.
University College London, London, UK.
Knee Surg Relat Res. 2020 May 27;32(1):24. doi: 10.1186/s43019-020-00031-w.
The mechanism of injury (MoI) for a patellar dislocation has not been fully established. The aim of this study was to use systematic video analysis to determine the MoI of a patella dislocation.
A systematic search was conducted of three video sharing websites and three popular search engines to identify videos demonstrating a patellar dislocation. Videos were reviewed by three surgeons trained in systematic video analysis, who commented on the position of the lower limb and the situation in which the injury occurred. The results were reviewed to build a consensus of the MoI for each video. Statistical analysis was conducted for interobserver agreement (p < 0.05).
Initial search yielded 603 videos with 13 meeting the inclusion criteria. The injuries were sustained performing a sporting activity (n = 9) or whilst dancing (n = 4). The injury was predominantly sustained during a non-contact situation (n = 10). The most common mechanism was an unbalanced individual with a flexed hip sustaining a valgus force to their flexed knee with the tibia externally rotated.
This study provides some insight into the MoI for a patellar dislocation and the findings may assist in developing injury prevention programmes and rehabilitation protocols as well as guiding future research.
髌骨脱位的损伤机制尚未完全明确。本研究的目的是通过系统的视频分析来确定髌骨脱位的损伤机制。
对三个视频分享网站和三个常用搜索引擎进行系统检索，以识别展示髌骨脱位的视频。由三名接受过系统视频分析培训的外科医生对视频进行审查，他们对下肢的位置以及损伤发生的情况进行评论。对结果进行审查，以就每个视频的损伤机制达成共识。进行观察者间一致性的统计分析（p < 0.05）。
初步检索得到603个视频，其中13个符合纳入标准。损伤发生在进行体育活动时（n = 9）或跳舞时（n = 4）。损伤主要发生在非接触情况下（n = 10）。最常见的机制是个体失衡，髋关节屈曲，屈曲的膝关节承受外翻力，同时胫骨外旋。
本研究为髌骨脱位的损伤机制提供了一些见解，研究结果可能有助于制定损伤预防计划和康复方案，并为未来的研究提供指导。
