This meta-analysis found that neurodynamic exercises were effective in increasing knee extension range of motion (ROM) and passive straight leg raising (SLR) when compared to no intervention and other techniques.
Effect sizes ranged from -2.28 to -0.21 for knee extension ROM and from 0.44 to 2.55 for passive SLR when compared to control groups or other interventions. However, the authors did warn that study heterogeneity was a concern.