A novel technique for full anatomic restoration of volar tilt in distal radius fracture

초록

Objective: The aim of this study was to present a technique that allows the surgeon to easily and reliably achieve volar tilt in dorsally displaced distal radius fractures treated with variable-angle volar locking plates. The study introduced this technique using 2.4 mm variable angle locking screws as reduction tools, and investigated the radiological outcomes of this technique. Methods: A total of 42 patients (30 female and 12 male; mean age: 58 years, range, 25 to 84 years) with unstable distal radius fractures were treated with this technique. All were patients with insufficient volar tilt in spite of primary fracture reduction through classic reduction techniques such as traction, manipulation, and direct fragment manipulation. Postoperatively, the patients were instructed to perform wrist active and passive motion exercises at home for minimum 30 minutes a day, and were allowed to perform activities of daily living after removal of splint. The patients were evaluated radiographically at minimum twelve months after surgery. Results: Mean follow-up period was 15.1 months (range: 12 to 24 months). Volar tilt of the distal radius before surgery was -11.9+/-10.4 (minus value means dorsal angulation), and after screw leverage was -11.5+/-4.3 degrees (uninjured side: -11.7+/-2.3°). Mean radiological outcomes at final visit were as follows: volar tilt; 10.8+/-4.5 degrees, radial inclination; 24+/-3.2°, radial height; 12.2+/-1.7 mm, and ulnar variance; 0.2+/-1.7 mm. Conclusion: We describe a simple, reliable technique to fine-tune volar tilt in dorsally displaced distal radius fractures fixed with variable-angle volar locking plates. This technique is especially useful when volar tilt remains insufficient in spite of primary fracture reduction through classic techniques.

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