Calcaneal fractures of 45 feet in 40 patients were clinically analysed who were treated from September 1975 to October 1980. It is known that fracture of the calcanei in which the subtalar articular facet is badly depressed and comminuted, leads to poor function. Bankart wrote, The results of crush fractures of the os calcis are rotten..., it would seem that the best result that can be expected from a fracture of the os calcis involving the subastragaloid joint is completely stiff but painless foot of a good shape and with free movement of the ankle joint. In 18 feet of the Rowes type 4 and 5, early subtalar fusion through Gallies posterior approach were performed. Results were obtained as follow: l. Among the 40 patients, 39 were male and one was female. 26(65%) cases were in the age arrange of 21-40 years. 2. Fracture occured in 17 cases at right side, 18 cases at left side and 5 cases in both calcanei. 3. The most common cause was a fall from a height and they landed on hind foot. 4. Of 18 cases who were taken primary subtalar fusion, 13 cases returned to his previous duty within 1 year after the operation, 5. The technique of this operation was easy and bony fusion was stimulated by early weight bearing. 6. It is speculated that early subtalar fusion in calcaneal fracture, which belongs to the Rowe's type 4 and 5, is recommended for early recovery and return to one's duty.