The case histories of ten patients treated for persistent instability of the elbow at 90 degrees flexion or for an old dislocation of the elbow between April 2001 and March 2003 were studied retrospectively. The average age was 51 years (40-62 years). In seven patients internal fixation of the elbow had to be performed, six of which were treated initially with an AO fixator. After an average of 8 days the management was changed to hinged fixation. The median Mayo Elbow Function Score was 78 points with two very good, three good, and five satisfactory results. Subjective satisfaction on the DASH Score (Disabilities of Arm, Shoulder and Hand) revealed a slight reduction by an average of 18 points.