['To determine whether the severity of lower limb spasticity had a differential effect on mobility following traumatic brain injury (TBI) and to investigate whether the distribution of lower limb spasticity influenced compensation strategies when walking.', 'Ninety-three people attending physiotherapy for mobility limitations following TBI participated in this study. Participants were grouped according to the presence and distribution of lower limb spasticity for comparison.', 'Mobility was measured using a 10-metre walk test and the high level mobility assessment tool. Three dimensional gait analysis was used to measure power generation and spasticity was assessed using the Tardieu scale. No significant relationship was found between the severity of lower limb spasticity and mobility limitations. There was a strong relationship between ankle power generation and mobility performance. Proximal compensation strategies did not vary significantly between groups with different distributions of lower limb spasticity.'] Does severity and distribution of spasticity limit mobility or influence compensatory strategies following traumatic brain injury?