Nine displaced intraarticular fractures of the calcaneus involving subtalar joint in six patien ts were treated by open reduction and internal fixation with plate at department of orthopedic surgery, chonnam university hospital from April 1990 to October 1991. The clinical and radiographic results were analysed after follow-up from five to twenty three months. 1. Of 9 fractures, 7 fractures were joint depression type and 2 fractures were tongue type by Essex-Lopresti classification.2. The operations were performed though lateral approach in 8 cases and medial approach in 1 case. 3. At final follow-up 12 months in average the assessments of results by Salama and Rowe unit system showed satisfactory results in 89% and 67%, respectively. 4. The averge Bohler angle was -6.1 before operation and increased to 16.4 at final follow up. 5. The common complication were pain around ankle and heel, subtalar arthritis and cal-caneal deformlty etc.