Interobserver Variability Among Radiologists for Diagnosis of Scaphoid Fractures by Computed Tomography

de Zwart AD, Beeres FJP, Kingma LM, et al (Landsteiner Inst, The Hague; Leiden Univ Med Centre, The Netherlands) J Hand Surg 37A:2252-2256, 2012^§

Abstract

Purpose

To determine the interobserver variability among radiologists for computed tomography (CT) diagnosis of scaphoid fractures.

Methods

Four specialized musculoskeletal radiologists evaluated the CT scans of 150 consecutive patients who were clinically suspected of having sustained a scaphoid fracture but whose scaphoid-specific radiographs were normal. The radiologists were asked to determine the presence or absence of a scaphoid fracture and to localize the fracture. Interobserver agreement was calculated using the kappa statistic.

Results

The radiologists diagnosed between 11 (7%) and 22 (15%) scaphoid fractures; the kappa value was 0.51.

Conclusion

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