O2381 THE VALUE OF A NEW DISTAL HUMERAL FRACTURE CLASSIFICATION SYSTEM

Abstract

Aims: The purposes of this study were to design a more useful fracture classiþcation system for distal humeral fractures and to validate it by exactly reproducing methodology from a previous study. Methods: We designed a new fracture classiþcation system based upon our experience of managing these fractures. We tested its validity by reproducing methodology from a study performed in Oxford. Using the same radiographs, we asked 9 independent assessors to classify the fractures, on two separate occasions, according to the Riseborough and Radin, Jupiter and Mehne and AO classiþcation systems as well as our own Ð The Shefþeld Classiþcation. The assessors were unaware that the new system was produced for the purposes of the study. Using the Kappa statistic, the level of interobserver and intraobserver agreement was determined. Results: Amongst all observers, The Shefþeld Classiþcation is a moderately reliable (k=0.603) but substantially reproducible (k=0.713) classiþcation system. The system improves to become substantially reliable (k=0.643) amongst orthopaedic surgeons. The proportion of fractures unclassiþable by the new system is similar to the AO classiþcation (3.7%). Conclusions: By reproducing previous methodology, we have a unique study that validates The Shefþeld Classiþcation. We believe that it can be used in a management algorithm for these complex fractures.