Treatment of paediatric unstable displaced distal radius fractures using Kapandji technique: a case series.

BACKGROUND: The technique of intra-focal pinning described by Kapandji is seldom used in paediatric patients. We present our series of paediatric patients treated with Kapandji technique for unstable displaced distal radius fractures. METHODS: We retrospectively reviewed medical records and radiographs of a consecutive series of 56 paediatric patients who underwent closed reduction and fixation with Kapandji technique for unstable displaced metaphyseal and Salter Harris 2 distal radius fractures, from 2008 to March 2018. One or two percutaneous K-wires were inserted intra-focally without crossing the physis to lever out, reduce and stabilize the distal fragment. The arm was immobilized with an above-elbow cast, and radiographic controls were scheduled at 1, 4, 8 weeks, at least. RESULTS: The mean age at the time of the trauma was 10.5 years. The K-wires were removed at a mean of 6.4 post-operative weeks. An above-elbow cast was used for the first 4 weeks, afterwards a below-elbow cast for 2 weeks and a short-arm brace until the full recovery of motion. The mean follow-up was 18 months (range 1.5-108 months). No pin-related complications were found. All fractures showed good healing, and the full function of the wrist was achieved in every case. CONCLUSION: Kapandji pinning is a reliable technique in paediatric patients with unstable displaced distal radius fractures. It shows a lower complication rate compared to other techniques. For these reasons, we suggest implementing its use in clinical practice.