Gait analysis and motor point block in dynamic varus of the rear foot in a head injured adult.

This clinical note describes a typical case of dynamic varus deformity of the hind part of the foot in a head injured adult. Gait analysis objectified, by kinematic data, the perturbed movement of the rear foot in the frontal plane and identified, by dynamic electromyography, the overactive muscle (posterior tibialis) involved in the deformity. The diagnosis was confirmed by a motor point block of the posterior tibialis muscle with functional improvement. Kinematic data also showed improvement after the block. This case report illustrates the usefulness of gait analysis in diagnosis and management of gait disturbances in adult patients.