Synovial chondromatosis is an uncommon non-neoplastic condition of the joints, forming multiple cartilaginous nodules in the synovium. The lesion usually tends to involve large joints, and the occurrence in the small joint of foot is very rare. We would like to report a case of synovial chondromatosis which was confused with Freiberg infarction in the 1st metatarsophalangeal joint of the foot.