Internal fixation of distal humerus fracture is problematic. A modified lateral approach was assessed to determine its role in the surgical management of these injuries.

From 1994 to 1998, we had operated 15 patients with distal humerus fracture. Eight patients who had intraarticular fracture were classified into group A, and seven patients who had transitional zone fracture were classified into group B. Both groups were operated by modified lateral approach. In group A, triceps muscle was elevated from medial and lateral intermuscular septum. Functional outcome was assessed with Broberg and Morrey's functional rating scale and anatomical measurement was also performed.

All fractures united without complication. The results of functional rating scale were as follows; 3 exellent, 9 good and 3 fair. Anatomical measurement of the average proximal extent of the plate from the lateral epicondyle was 16 ± 2.7 cm (range 12.3 to 19.8 cm) and in 3 patients, more than 70% of the entire length of the humerus.

On the bases of these results, intraarticular fracture and transitional zone fracture of the distal humerus can be operated successfully with the modified lateral approach.