Congenital hand anomalies encompass a very broad spectrum of deformity, and precise classification of these deformities has always posed a major problem. We reviewed 50 cases of congenital hand deformities in 47 patients, managed at Department of,Orthopedic Surgery, Severance Hospital from Jan. 1980. to Jun. 1984 and the following results were obtained. 1. There were 26 males and 21 females in 47 patients and the ratio between male and female was 1.2: 1. Right hands were involved in 16 patients and both hands were in 14 patients. 2. The most commomn type of anomalies were polydactylysm(48%), next were syndactylysm (24%) and the follwing anomalies were found: camptodactyly, congenital constriction band syndrome, congenital ulnar deficiency, congenital clasped thumb, clinodactyly, congenital finger deficiency, symphalangism. 3. 9 associated congenital anomalias were found in 5 patients, in which, anomalies of the foot were most common. 4. Prenatal history such as drug ingestion, preeclampsia, breech delivery, prematurity, low birth weight were found and 2 cases of family history were found. 5. Treatment was stressed upon the function of hand and the improvement of the deformity.