The Intra- and Interobserver Agreement on Diagnosis of Dupuytren Disease, Measurements of Severity of Contracture, and Disease Extent

This agreement study aimed to determine the intra- and interobserver agreement of four variables for diagnosing DD, determining severity of contracture, and disease extent. One of them is a new measurement on the area of nodules and cords, to be able to determine disease extent in early cases without flexion deformities. Intra-observer agreement was slightly higher on average than interobserver agreement. Overall, the intra- and interobserver agreement in diagnosing DD and determining the severity of flexion contracture is high. Also, the newly introduced variable area of nodules and cords has high intra- and interobserver agreement, indicating that it is suitable to measure disease extent.