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Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_II | Pages 165 - 165
1 May 2011
Kamminga S Doornberg J Lindenhovius A Bolmers A Goslings J Ring D Kloen P
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Background: Extra-articular fractures of the distal radius in children are most often treated with closed reduction and cast immobilization. The purpose of this retrospective study was to evaluate long term (> 12 years follow-up) objective and subjective outcomes in a consecutive series of pediatric patients treated with closed reduction with standardized outcome instruments. We hypothesized that children treated with closed reduction and cast immobilization have little or no objective functional impairment in later life and therefore subjective factors are the strongest determinants of outcome.

Methods: Twenty-seven patients with an average age at time of injury of 9 years (range, five to sixteen years) were evaluated at an average of twenty-one years (range, twelve to twenty seven years) after injury (patients aged 21 to 39) after closed reduction of an extra-articular distal radius fracture. Patients were evaluated using 2 physician-based evaluation instruments (modified Mayo wrist score; MMWS, and the Sarmiento modification of the Gartland and Werley score; MGWS) and an upper extremity-specific health status questionnaire (Disabilities of the Arm, Shoulder and Hand; DASH) questionnaire. Radiographic measurements were also made. Multivariable analysis of variance and multiple linear regression modelling were used to identify the degree to which various factors affect variability in the scores derived with these measures.

Results: All fractures had healed without significant loss of alignment. Final functional results according to the MGWS were rated as excellent or good in all patients. The average MMWS score was 90 points, and the median DASH score was 0 points. Twenty patients (74%) considered themselves pain free. Bivariate analysis revealed pain -as rated according to scales used in the MMWS- and age at time of injury to be correlated with DASH scores, with pain as the only independent predictor of patient-based outcome in multivariable analysis. This explains almost three quarters of the variability in DASH scores. Pain, range of motion, and radiographic measurement of radial length correlated with the physician based scoring system MMWS;

Conclusions: Twenty-one years after injury 96% of patients have a satisfactory outcome according to physician-based MMWS categorical ratings and patient-based DASH scores. It is remarkable that pain explained 74% of the variation in DASH scores. Perhaps when there is very little impairment, subjective factors are more important determinants of disability.