PURPOSE: For the treatment of displaced children supracondylar fractures, closed reduction and lateral pinning were performed consecutively and their results were analyzed. MATERIALS AND METHODS: During the period from January 1997 to May 2001, all children with displaced supracondylar fractures of the humerus were treated by closed reduction and lateral K-wire pinning. Among them, 44 fractures with more than 1 year follow up were selected. Carrying angle and range of motion were measured. Baumann angle and lateral humerocapital angles were measured from the anteroposterior and lateral radiograph 3 times (immediate post op, K-wire removal, last follow up). RESULTS: Results were graded according to the criteria of Flynn et al. using both cosmetic and functional evaluation. According to the cosmetic factor, 36 cases (82%) were excellent and 8 cases (18%) were good. According to the functional factor, 39 cases (88%) were excellent and 5 cases (12%) were good. No statiscally significant differences, as seen on Baumann and humerocapital angle, between immediate post operative films and films taken at the time of K-wire removal (p=0.082, p=0.27). There was no significant differences in Baumann and humerocapital angle at the time of K-wire removal and last follow up (p=0.19, p=0.27). CONCLUSION: Closed reduction and lateral K-wire pinning is considered as an acceptable modality of the treatment of displaced children supracondylar fractures.