Pantzar-Castilla, E. H. S. ., Wretenberg, P., & Riad, J. (2021). Knee flexion contracture impacts functional mobility in children with cerebral palsy with various degree of involvement: a cross-sectional register study of 2,838 individuals . Acta Orthopaedica, 92(4), 500. https://doi.org/10.1080/17453674.2021.1934801