Gait characteristics of patients with bilateral club feet following posteromedial release procedure.

In this study we intended to evaluate the gait characteristics of children who had bilateral operated clubfeet, and to compare the results with gait parameters of children without clubfeet or lower extremity abnormalities. Fifteen children with bilateral plantigrade and asymptomatic clubfeet, operated bilaterally with posteromedial release method, were included in group P. Means+/-SD of age and follow-up time were 8.5+/-2.6 years (range, 4-14 years) and 7.7+/-2.8 years (range, 3-10 years), respectively. Age, sex, height-and weight-matched 24 children without clubfeet or lower extremity abnormalities were included in the control group (group C). Three-dimensional computerized gait analysis was performed for all subjects, and time-distance, kinematic and kinetic gait characteristics of the groups were compared. Time-distance characteristics of the groups were identical. Ankle plantar flexion angles, plantar flexor moment and generated power were significantly decreased in group P (P<0.05). Knee hyperextension during midstance was observed in 17 of 30 (57%) knees in the P group. Kinetic analysis revealed excessive knee valgus and flexion moments, as well as decreased second peak values of vertical ground reaction forces for group P. This study shows that even successfully operated, plantigrade and clinically asymptomatic children with bilateral clubfeet have significant gait deviations involving all lower limb joints. Future studies are needed to investigate the accountable factors of gait deviations and possible long-term musculoskeletal morbidity of operated children with bilateral clubfeet.