Abstract
This systematic review aims to examine the evidence of adding postural insole to traditional physical therapy to improve weight distribution, gait, mobility, balance, and postural control in stroke survivors. Five databases were searched to retrieve all related randomized controlled trials examining the effect of insole on stroke patients. Two independent authors checked the potential articles against eligibility criteria according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. A meta-analysis was conducted for available outcomes and the statistical heterogeneity was examined using the I2 test. Of 762 articles, only 15 with 448 patients were included after they met the inclusion criteria with most of them including participants exceeding 6 months of stroke incidence. When insole was used as compelled body weight shifting method, pooled statistical analysis revealed significant improvement in gait velocity [standardized mean difference (SMD) = 0.67; 95% confidence interval (CI): 0.31, 1.02; P = 0.0003], cadence (SMD = 0.67; 95% CI: 0.16, 1.18; P = 0.01] and stride length (SMD = 1.11; 95% CI: 0.57, 1.65; P < 0.0001), while no significant effect on step length (SMD = 0.48; 95% CI: -0.37, 1.33; P = 0.27). Pooled statistical analysis of balance outcomes revealed significant improvement in weight-bearing symmetry balance (SMD = 0.82; 95% CI: 0.25, 1.39; P = 0.005) and long-term improvement in Berg Balance Scale (SMD = 1.19; 95% CI: 0.19, 2.20; P = 0.02), while no difference was observed in balance confidence (SMD = 0.44; 95% CI: -0.15, 1.04; P = 0.14) and sensorimotor functions (SMD = 0.36; 95% CI -0.39, 1.11; P = 0.35). Insoles significantly improved spatiotemporal gait parameters, gait symmetry, and static balance compared with traditional physical therapy alone.
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