We report a case of congenital unilateral upper limb muscular hypertrophy which presented with loss of extensor tendon excursion of a single digit in late adolescence. The reason for the problem arising is not clear and is not clearly explained by the underlying congenital pathology.
Physical Medicine and Rehabilitation, Department of Orthopaedic Surgery, Shiga University of Medical Science, Shiga-ken, Japan. simai@belle.shiga-med.ac.jp
