Classification of distal radius fractures: an analysis of interobserver reliability and intraobserver reproducibility.

The Frykman, Melone, Mayo, and AO classification systems for distal radius fractures were evaluated for interobserver reliability and intraobserver reproducibility in a clinical setting using initial plain radiographs. Two attending orthopedic hand surgeons and two attending radiologists classified 55 sets of distal radius fractures. kappa-statistics were used to establish a relative level of agreement between observers for the two readings and between separate readings by the same observer.