Abstract
OBJECTIVE: To evaluate the effectiveness of retrograde tibial intramedullary nail (RTN) in addressing nonunion in the distal one-fourth of the tibia. METHODS: This retrospective study included consecutive patients who were treated with RTN for nonunion in the distal one-fourth of the tibia between December 2020 and August 2023. Data regarding age, sex, injury mechanism, fracture type, initial fixation method, nonunion duration and type, risk factors, surgical duration, hospital stay, time to bone union, ankle function at final follow-up, and any complications were extracted from hospital records and analysed. RESULTS: Five patients in total were included, with previous treatments comprising locking plates and/or external fixation. The mean duration of RTN surgery was 94.0 ± 13.7 min, and mean duration of hospital stay was 9.8 ± 1.9 days. Patients were monitored for 10-18 months post RTN, achieving complete bone healing within a mean of 4.8 months. At the latest follow-up, the mean American Orthopedic Foot and Ankle Society (AOFAS) score was 84.4 ± 6.8 (range, 77-95). No complications, such as infection, reoperation, implant issues, rotational deformity, or shortening were reported. CONCLUSION: RTN emerges as a dependable, minimally invasive, and safe treatment modality for managing nonunion in the distal one-fourth of the tibia.