Distal radius fractures - Aetiology, treatment and outcome - Basic work of the multicenter study of the Austrian Society of Surgery of the Hand and the study group of hand and microsurgery of the Austrian Society of Traumatology

Introduction: Distal radius fractures were investigated in a retrospective open multicenter cohort study to assess aetiology, fracture pattern and treatment modalities and their influence on subjective and objective outcome. Patients and Method: Demographic data, fracture history, course of fracture healing, functional and radiological parameters and the DASH-questionnaire were collected from 18 Austrian hospitals and analysed statistically. Results: Patients: n = 707, 465 (65.8%) female, 242 (34.2%) male. Mean age: 52 (19-86) years; age group 1 (19-39 years) 26%, age group 2 (40-59 years) 41%, age group 3 (60 years and elder) 33%. Follow-up: mean 5.8 (3.9-17) years; History: fall 65.1%, sports 17.4%, traffic accidents 8.9%, fall from great height 7.5%; others 1.1%. Most frequent fracture patterns according to AO: A2 (26.6%), C2 (22.2%), A3 (16.1 %), C1 (12.7%); according to PE: 1-2 (44.8%), I-1 (40.0%), III-2 (4.4%), II-2B (4%). There was no significant correlation between fracture pattern and age groups for both fracture classifications. Treatment: 57.9% surgical, 42.1 % conservative. Radiological results: Depending on treatment, there were significant differences between the radial tilt and the palmar radial inclination, the dorsal and palmar ulnar variance and the width of the DRU-joint. DASH-questionnaire: Median 6.03 (90-0). There was a significant, minor positive correlation of bad results in the elderly and a minor positive correlation of bad results correlated to the palmar radial inclination as well as a minor negative correlation to the palmar DRUJ-value and the ulnar variance. Conclusion: The incidence of distal radius fractures was increased in females and in patients with the age between 40 - 59 years. The most frequent cause to sustain a distal radius fracture was a simple fall. 85% of the fractures were dislocated dorsally. The most frequent fracture type was the dorsal intraarticular. There was no specific fracture type observed to be typical for one of the age groups and surgical treatment was almost as frequent as conservative. Surgical treatment improved reconstruction of the radial tilt, palmar inclination and the DRU-joint. Subjective outcome was worse in elderly patients. The radiological changes in the DRU-joint correlated to minor DASH values.