Twelve cases of acute injury of the lateral collateral ligament of the ankle were treated conservatively by early mobilization. Weight bearing was allowed as soon as possible. Active exercise and dynamic joint control training were initiated at least by day 5. The mean talar tilt angle and anterior drawer distance showed significant improvement from 9.1° to 1.3° (p<0.001) and 3.5 mm to —0.3 mm (p<0.001) respectively. All cases completely returned to the competitive game level. This early mobilization prevented evils of using plaster. Early mobilization and weight bearing are considered as the method of first choice and provided recovery in range of motion of ankle mobility.
