The influence of hip abductor weakness on frontal plane motion of the trunk and pelvis in patients with cerebral palsy

► Correlation of hip abductor weakness with pelvic drop and lateral trunk lean in CP. ► Hip abductor weakness only partially influences trunk leaning (r = 0.278). ► Other factors should be considered which may explain lateral trunk lean. ► Pelvic position was found to be remained stable independent of abductor strength. ► Pelvic position seems to be more important than trunk position during walking.