Health and Sports Association Nabeshima Orthopaedic Clinic, 4-23-2 Matsunami, Chuo-ku, Chiba, Chiba, 260-0044, Japan.
Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-8670, Japan; Sportsmedics Center, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-8670, Japan.
Phys Ther Sport. 2021 Nov;52:168-172. doi: 10.1016/j.ptsp.2021.09.002. Epub 2021 Sep 8.
[Objectives] Immobilization reduces symptoms after lateral ankle sprain but may worsen the range of motion (ROM) of the ankle and delay return to play (RTP). We aimed to elucidate the correlation between ankle ROM and time to RTP following immobilization for lateral ankle sprain and investigated if isometric exercise during immobilization would increase ROM and shorten the time to RTP. [Participants and outcome measures] Eighty-two patients with acute lateral ankle sprain were treated by a short-leg cast with or without isometric exercise and electrical muscle stimulation (EMS); intervention group or control group, respectively. The correlation between ankle ROM at cast removal and time to RTP was analyzed. The total and side-to-side ankle ROM and the time to RTP were compared between the two groups. [Results] Side-to-side difference in total ankle ROM significantly correlated with time to RTP (r = 0.38, p = 0.02). The intervention reduced the side-to-side difference in total ROM (20° versus 31°, p = 0.01) and time to RTP (46 versus 65 days, p = 0.01) compared to the control group. [Conclusion] Increased deficiency in ankle ROM led to a longer time to RTP, and isometric exercise combined with EMS during immobilization increased the total ankle ROM and shortened the time to RTP.
[目的] 踝关节外侧扭伤固定后可减轻症状，但可能会使踝关节活动范围（ROM）恶化，并延迟重返赛场（RTP）。我们旨在阐明踝关节 ROM 与踝关节外侧扭伤固定后 RTP 时间之间的相关性，并探讨在固定期间进行等长运动是否会增加 ROM 并缩短 RTP 时间。[参与者和结果测量] 82 例急性踝关节外侧扭伤患者分别接受短腿石膏固定加或不加等长运动和电肌肉刺激（EMS）治疗；干预组或对照组。分析了去除石膏后踝关节 ROM 与 RTP 时间之间的相关性。比较两组之间的总踝关节 ROM 和侧方踝关节 ROM 以及 RTP 时间。[结果] 总踝关节 ROM 的侧方差异与 RTP 时间显著相关（r=0.38，p=0.02）。与对照组相比，干预组降低了总 ROM 的侧方差异（20°对 31°，p=0.01）和 RTP 时间（46 对 65 天，p=0.01）。[结论] 踝关节 ROM 不足增加导致 RTP 时间延长，固定期间进行等长运动结合 EMS 可增加总踝关节 ROM 并缩短 RTP 时间。
