Incidence of Gait Abnormalities After Traumatic Brain Injury

Abstract Williams G, Morris ME, Schache A, McCrory PR. Incidence of gait abnormalities after traumatic brain injury. Objective To identify the most common gait abnormalities presenting after traumatic brain injury (TBI) and quantify their incidence rate. Design Case series. Setting Biomechanics laboratory. Participants A convenience sample of 41 people with TBI receiving therapy for gait abnormalities, and a sample of 25 healthy controls. Intervention Three-dimensional gait analysis. Main Outcome Measures Spatiotemporal, kinematic, and kinetic data at a self-selected walking speed. Results People with TBI walked with a significantly slower speed than matched healthy controls. There was a significant difference between groups for cadence, step length, stance time on the affected leg, double support phase, and width of base of support. The most frequently observed biomechanical abnormality was excessive knee flexion at initial foot contact. Other significant gait abnormalities were increased trunk anterior/posterior amplitude of movement, increased anterior pelvic tilt, increased peak pelvic obliquity, reduced peak knee flexion at toe-off, and increased lateral center of mass displacement. Ankle equinovarus at foot-contact occurred infrequently. Conclusions People with TBI were found to have multijoint gait abnormalities. Many of these abnormalities have not been previously reported in this population.