Thirty-five patients with Monteggia fractures were studied retrospectively at least one year after injury. Thirty-eight patients not seen personally provided supplemental data. Eleven of fourteen children were treated by closed reduction, and seventeen of twenty-one adults were treated surgically. Using new criteria for evaluating results, nine children (64 per cent) and five adults (24 per cent) had acceptable results. These five adults all had surgery. No form of internal fixation was superior. The incidence of nerve palsies was 17 per cent on admission and 14 per cent after treatment.