VOLAR-ULNAR TENSION BAND PLATING FOR DORSALLY DISPLACED AND COMMINUTED FRACTURES OF THE DISTAL RADIUS

Abstract

Displaced comminuted intra-and extra-articular fractures of distal radius require anatomical reduction for optimum results.

To assess clinical, functional and radiological results of volar-ulnar tension band plating of dorsally displaced comminuted fractures of distal radius, we used volar-ulnar tension band plating technique (without bone grafting) and early mobilisation to treat dorsally displaced and comminuted fractures of distal radius in 47 patients with an average age of 48 years (range, 19–76 years).

Volar tilt, radial height, ulnar inclination and volar cortical angles were measured on the unaffected side. AO volar plate was pre-contoured to match the volar cortical angle of the unaffected side. The horizontal arm of the plate was fixed to the distal fragment first. When the longitudinal arm of the plate was brought onto the radial shaft, the displaced distal fragment was levered out anteriorly to restore the normal volar tilt. Adjustment in ulnar inclination and radial height can be made by medio-lateral and cephalo-caudal movement of the longitudinal arm of the plate.

The average follow-up was 26 months (range 12–41 months). According to Gartland and Werley’s system 25 patients had excellent, 15 had good, 7 had fair functional results. The median Disability of Arm, Shoulder and Hand (DASH) score was 10 (range 0–60). Average grip strength as percentage of the unaffected side was 80 %. Average Palmarflexion was 61 degrees, Dorsiflexion 66 degrees, Ulnar deviation 34 degrees, Radial deviation 19 degrees, Supination 74 degrees and Pronation 80 degrees. According to Lidstrom and Frykman’s radiological scoring system 39 patients had excellent and 8 had good anatomical results.

Conclusion: This relatively new technique has given good results in majority of patients. We recommend its use in displaced and comminuted fractures of distal radius in physiologically young patients with high need and demand.