Objectives: To evaluate long-term results of surgical treatment of fractures of the lateral humeral condyle in children. Methods: We evaluated 62 children (mean age 6.9 years) who underwent open reduction and osteosynthesis with Kirschner wires for lateral humeral condyle fractures. According to the Milch classification, 53 cases had type II and nine cases had type I fractures. Displacement was above 2 mm in all cases. The results were evaluated using the Hardacre criteria, based on the range of motion, carrying angle, pain, arthritis, and neurological symptoms. The mean follow-up was eight years (range 2 to 12 years). Results: According to the Hardacre criteria, the results were excellent, good, and poor in 36, 23, and three cases, respectively. Three patients had a valgus deformity exceeding 15 degrees, and nine patients exhibited fishtail deformity. Conclusion: The extent of displacement is important in the selection of treatment, and it should be assessed with oblique radiographs. Conservative therapy is indicated for fractures with a displacement of less than 2 mm. Those with a greater displacement should be reduced anatomically and then treated with minimal osteosynthesis.