Ohji Shunsuke, Aizawa Junya, Hirohata Kenji, Ohmi Takehiro, Mitomo Sho, Jinno Tetsuya, Koga Hideyuki, Yagishita Kazuyoshi
Clinical Center for Sports Medicine and Sports Dentistry, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, 113-8519, Tokyo, Japan.
Department of Physical Therapy, Juntendo University, 3-2-12 Hongo, Bunkyo-ku, 113-0033, Tokyo, Japan.
J Exp Orthop. 2021 Apr 2;8(1):26. doi: 10.1186/s40634-021-00344-z.
To investigate the relationship between single-leg hop distance (SLHD), normalized body height, and return-to-sports (RTS) status after anterior cruciate ligament reconstruction (ACLR) and to identify the cut-off value for SLHD on the operated side.
Seventy-three patients after primary ACLR (median 13.5 months) participated in this cross-sectional study. Participants were divided into ''Yes-RTS'' (YRTS) or ''No-RTS'' (NRTS) groups based on a self-reported questionnaire. SLHD was measured, and the limb symmetry index (LSI) and SLHD (%body height) were calculated. A minimum p-value approach was used to calculate the SLHD cut-off points (%body height) on the operated side that were strongly associated with the RTS status. Logistic regression analysis was used to analyse the association between RTS status and SLHD cut-off point (%body height). Isokinetic strength and Tampa scale for kinesiophobia (TSK) were measured as covariates.
Among 73 patients, 43 (59%) were assigned to the YRTS and 30 (41%) to the NRTS group. The 70% body height cut-off point for SLHD on the operated side was most strongly associated with RTS status. In a logistic regression analysis including other covariates, SLHD (%body height) < 70% and TSK were negatively associated with RTS status. Except for two participants, the LSI of the SLHD exceeded 90% and there was no significant association between the LSI of the SLHD and RTS status.
Even after improvement in the LSI of the SLHD, planning rehabilitation with the goal of achieving SLHD over 70% body height may be important for supporting RTS after ACLR.
Cross-sectional study, Level IV.
探讨前交叉韧带重建术（ACLR）后单腿跳跃距离（SLHD）、身高标准化以及恢复运动（RTS）状态之间的关系，并确定患侧SLHD的临界值。
73例初次ACLR术后患者（中位时间13.5个月）参与了这项横断面研究。根据自我报告问卷，将参与者分为“恢复运动（YRTS）”或“未恢复运动（NRTS）”组。测量SLHD，并计算肢体对称指数（LSI）和SLHD（%身高）。采用最小p值法计算患侧与RTS状态密切相关的SLHD临界值（%身高）。采用逻辑回归分析RTS状态与SLHD临界值（%身高）之间的关联。测量等速肌力和运动恐惧坦帕量表（TSK）作为协变量。
73例患者中，43例（59%）被归入YRTS组，30例（41%）被归入NRTS组。患侧SLHD的70%身高临界值与RTS状态关联最为密切。在纳入其他协变量的逻辑回归分析中，SLHD（%身高）<70%和TSK与RTS状态呈负相关。除两名参与者外，SLHD的LSI超过90%，且SLHD的LSI与RTS状态之间无显著关联。
即使SLHD的LSI有所改善，以实现SLHD超过身高70%为目标规划康复训练，对于支持ACLR术后的RTS可能很重要。
横断面研究，IV级。
