Menez Charlotte, L'Hermette Maxime, Coquart Jeremy
Normandie Univ, UNIROUEN, CETAPS, Rouen, France.
Orthodynamica Center, Mathilde Hospital 2, Rouen, France.
Front Sports Act Living. 2020 Dec 16;2:579152. doi: 10.3389/fspor.2020.579152. eCollection 2020.
Mild leg length discrepancy can lead to musculoskeletal disorders; however, the magnitude starting from which leg length discrepancy alters the biomechanics of gait or benefits from treatment interventions is not clear. The aim of the current study was to examine the immediate effects of orthotic insoles on gait symmetry and pain on mild leg length discrepancy according to two groups of the leg length discrepancy (i.e., LLD ≤ 1 cm vs. LLD > 1 cm). Forty-six adults with mild leg length discrepancy were retrospectively included and classified into two groups (G or G). All subjects underwent routine 3D gait analysis with and without orthotic insoles. The symmetry index was calculated to assess changes in gait symmetry between the right and left limbs. Pain was rated without (in standing) and with the orthotic insoles (after 30 min of use) on a visual analog scale. There was a significant improvement in the symmetry index of the pelvis in the frontal plane ( = 0.001) and the ankle in the sagittal plane ( = 0.010) in the stance with the orthotic insoles independent from the group. Pain reduced significantly with the orthotic insoles independently from the group ( < 0.001). Orthotic insoles significantly improved gait symmetry in the pelvis in the frontal plane and the ankle in the sagittal plane, as well as pain in all subjects (both LLD ≤ 1 cm and LLD > 1 cm) suggesting that it may be appropriate to treat even mild leg length discrepancy.
轻度腿长差异可导致肌肉骨骼疾病；然而，腿长差异从何种程度开始改变步态生物力学或从治疗干预中获益尚不清楚。本研究的目的是根据两组腿长差异（即LLD≤1 cm与LLD>1 cm），研究矫形鞋垫对轻度腿长差异患者步态对称性和疼痛的即时影响。46名患有轻度腿长差异的成年人被回顾性纳入并分为两组（G1或G2）。所有受试者在佩戴和不佩戴矫形鞋垫的情况下接受常规三维步态分析。计算对称指数以评估左右肢体之间步态对称性的变化。在视觉模拟量表上对站立时不佩戴（矫形鞋垫）和佩戴矫形鞋垫（使用30分钟后）的疼痛进行评分。在佩戴矫形鞋垫的站立阶段，无论分组如何，骨盆在额状面的对称指数（P = 0.001）和踝关节在矢状面的对称指数（P = 0.010）均有显著改善。无论分组如何，佩戴矫形鞋垫后疼痛均显著减轻（P < 0.001）。矫形鞋垫显著改善了所有受试者（LLD≤1 cm和LLD>1 cm）骨盆在额状面和踝关节在矢状面的步态对称性以及疼痛，这表明即使是轻度腿长差异也可能适合进行治疗。
