The authors report the late results in a series of 45 unicondylar intra-articular fractures of the distal humerus treated by internal fixation. The fractures were classified according the AO system. The average follow-up time was 4.25 years. A rating scale was used that was based on patient interviews. Based on the late results, internal fixation is concluded to be the treatment of choice for all unicondylar intra-articular fractures of the humerus.