Management of unstable distal radius fractures with AO 2.4 mm locking plate system

Objective To observe the clinical outcome of AO 2.4 mm locking plate system used for unstable distal radius fractures. Methods From May 2007 to October 2008, 115 patients (5 cases of both sides) with unstable distal radius fractures were managed by AO 2.4 mm locking plate system. There were 35 fractures of type A, 15 type B and 70 type C according to AO classification. Of them, 10 fractures were open, with 6 of type 1 and 4 of type 2, according to Gustilo-Anderson Classification. Volar plating was conducted in 78 cases, dorsal plating in 16 cases and dorsal + radial plating in 26 cases. Results Ninety-eight patients (3 cases of both sides) were followed up for an average of 8 (range, 6 to 15) months. The follow-up rate was 84.2%. Radiographic bone union was achieved in all cases without infection, implant loosening, or tendon and median nerve irritations. The average ROM was 54°, 58°, 72°, and 76° for dorsi-extension, palmer flexion, pronation and supination respectively. According to Gartland & Werley Scores modified by Sarmiento, there were 55 excellent cases, 32 good and 14 fair, with an excellent to good rate of 86.1%. Conclusion AO 2.4 mm locking plate system can offer individualized fixation regimen for unstable distal ra-dius fractures, leading to satisfactory fracture reduction and fixation with predictable clinical outcomes. Key words: Radius fractures; Fracture fixation, internal; Internal fixators; Plates