Faculty of Sport Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan.
Graduate School of Sport Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa, Saitama, Japan.
J Foot Ankle Res. 2022 Jan 31;15(1):8. doi: 10.1186/s13047-022-00513-y.
Medial tibial stress syndrome is a common sports related injury. Altered foot kinematics can be a risk factor for the injury. Since foot segments can move independently, intersegment coordination is important for proper foot function. This study aimed to compare the foot intersegmental coordination pattern and single segment kinematics between female lacrosse players with and without a history of medial tibial stress syndrome during drop jump.
Twelve players with a medial tibial stress syndrome history and 12 players with no history were enrolled. Foot kinematics, including angle at landing and peak angle and excursion at the rearfoot, midfoot, and forefoot during single-leg drop jumps were analysed. Each segment motion data from landing to leaping was time-scaled to 100% to analyse the intersegmental coordination with a modified vector coding technique. Instant intersegmental coordination of every 1% was classified into four patterns (in-phase, two segments rotate in the same direction with similar amplitudes; anti-phase, two segments rotate in opposite directions; proximal phase, proximal segment dominantly rotates in the same direction compared to the distal segment; and distal phase, distal segment dominantly rotates in the same direction compared to the proximal segment). The percentage of intersegmental coordination pattern and kinematics in each segment were compared between the groups using the Student's t test.
Groups with a history of medial stress syndrome showed a significantly higher percentage of proximal phase between the rearfoot and midfoot in the sagittal (Mean ± SD; history, 52.2 ± 17.9%, no history, 29.3 ± 16.7%; p = 0.004) and coronal planes (history, 40.3 ± 22.0%, no history, 15.9 ± 9.1%; p = 0.004). Dorsiflexion excursion (history, 34.5 ± 4.5°, no history, 29.6 ± 2.1°; p = 0.003) were significantly larger in a history of medial tibial stress syndrome group compared to no history group.
Rearfoot dominant motion pattern relative to the midfoot may be related to medial tibial stress syndrome. Intersegmental coordination analysis may be useful for detecting abnormal foot coordination patterns. Also, stabilization for the rearfoot may be required rather than the midfoot for intervention.
胫骨内侧应力综合征是一种常见的与运动相关的损伤。足部运动力学的改变可能是受伤的一个危险因素。由于足部各节段可以独立运动，因此各节段之间的协调对于足部的正常功能非常重要。本研究旨在比较女性曲棍球运动员在单腿跳下落时，有和无胫骨内侧应力综合征病史者的足间节段协调模式和单节段运动学特征。
招募了 12 名有胫骨内侧应力综合征病史的运动员和 12 名无病史的运动员。分析了单腿跳下落时的足部运动学特征，包括着地时的角度以及后足、中足和前足的峰值角度和活动度。将每个节段从着地到跳跃的运动数据按 100%时间比例进行缩放，以使用改良的矢量编码技术分析节段间的协调性。将每 1%的即时节段间协调性分为 4 种模式（同相，两个节段以相似的幅度向相同的方向旋转；反相，两个节段向相反的方向旋转；近相，与远节段相比，近节段主要向相同的方向旋转；远相，与近节段相比，远节段主要向相同的方向旋转）。使用学生 t 检验比较两组之间各节段的节段间协调性和运动学百分比。
胫骨内侧应力综合征病史组在矢状面（病史组平均 ± 标准差，52.2 ± 17.9%，无病史组，29.3 ± 16.7%；p = 0.004）和冠状面（病史组平均 ± 标准差，40.3 ± 22.0%，无病史组，15.9 ± 9.1%；p = 0.004）中后足和中足之间的近相百分比明显更高。胫骨内侧应力综合征病史组的背屈活动度（病史组，34.5 ± 4.5°，无病史组，29.6 ± 2.1°；p = 0.003）明显大于无病史组。
与中足相比，后足主导的运动模式可能与胫骨内侧应力综合征有关。节段间协调性分析可能有助于发现异常的足部协调模式。此外，对于干预措施，可能需要稳定后足，而不是中足。
