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VOLAR-ULNAR TENSION BAND PLATING FOR UNSTABLE OR COMMINUTED DISPLACED DISTAL RADIUS FRACTURES A NEW CLASSIFICATION FOR ACCURACY OF REDUCTION



Abstract

Purpose: Management of unstable or comminuted displaced fractures of the distal radius is difficult. We report our experience treating these fractures with AO volar plate fixation applying the principle of a volarulnar tension band platting. An attempt to introduce a new radiological classification for the accuracy of reduction is made. The classification includes 10 criteria.

Materials and Method: We reviewed clinically and radiologically 99 patients (101 fractures); 60 were type C and 41 were type A. The average follow up was 37 months (24 – 57). The average age was 46 years (19 – 81). Sarmiento’s modification of Gartland and Werley and Cooney’s modification of Green and O’Brien were used for clinical assessment. Lidstorm and Frykman used for radiological assessment.

Results: At final follow up the means of distal radius parameters were: volar tilt of 9°, radial inclination of 22°, radial height of 11mm and palmer cortical angle of 32°. The mean dorsiflexion was 61°, palmer flexion was 59°, pronation was 80° and supination was 76°. Grip strength was 86% of the opposite side. The average DASH score was 13.6. There was 13 poor results, 6 of them had a significant loss the initial reduction. There was significant correlation between our classification outcome and the clinical outcome.

Conclusion: AO volar plate fixation of unstable distal radius fractures provides a strong fixation that maintains reduction and allows early mobilisation.

Correspondence should be addressed to Ms Larissa Welti, Scientific Secretary, EFORT Central Office, Technoparkstrasse 1, CH-8005 Zürich, Switzerland