Operative treatment of nonunions in the elderly: Clinical and radiographic outcomes in patients at minimum 75 years of age

Background: Limited information exists on nonunion treatment in the elderly. This retrospective study evaluates whether results of operative treatment of nonunion of the humerus or femur in patients aged ≥ 75 years are comparable to those in younger patients. Methods: We identified patients age ≥ 75 years with a nonunion of humerus or femur treated with open reduction and internal fixation. The Non-Union Scoring System was calculated. Complications, clinical outcome, and radiographic findings were assessed. Primary endpoint was nonunion healing. A literature review compared time to healing of humeral and femoral nonunion in younger populations. Results: We identified 45 patients treated for a nonunion of humerus or femur with > 12 months follow-up. Median age was 79 years (range 75–96). Median time to presentation was 12 months (range 4–127) after injury, median number of prior surgeries was 1 (range 0–4). Union rate was 100%, with median time to union 6 months (range 2–42). Six patients underwent revision for persistent nonunion and healed without further complications. Conclusions: Using a protocol of debridement, alignment, compression, stable fixation, bone grafting and early motion, patients aged 75 years or older can reliably achieve healing when faced with a nonunion of the humerus or femur. Level of Evidence: IV.