The results of 19 patients in a pilot study in which early mobilization after operative repairs of ruptured Achilles tendons are presented. Serial ultrasound scanning of the repaired tendon showed satisfactory healing. Muscle function was analysed isokinetically and gait symmetry was examined using kinetic analysis. Normal strength of plantarflexion and dorsiflexion was achieved with almost normal range of ankle movement. All patients had normal gait kinetic parameters and symmetry. Normal activities were regained rapidly, and 15 out of 19 patients returned to their pre-injury status. There were no reruptures.