Previous studies indicate that patients with a more negative perception of their illness tend to respond less favorably to treatment, but little is known about whether illness perceptions differ based on the type of hand or wrist conditions. Therefore, we compared illness perceptions between patients scheduled to undergo surgery for 4 illnesses in hand surgery: carpometacarpal osteoarthritis (CMC OA), Dupuytren disease, carpal tunnel syndrome (CTS), and trigger finger syndrome (TFS). We hypothesized there would be differences in illness perception between these patient groups.
Before surgery, patients were asked to complete the Brief Illness Perception Questionnaire (Brief-IPQ) as part of routine outcome measurement in a specialized hand and wrist surgery clinic. The Brief-IPQ is a validated questionnaire to rapidly assess the cognitive and emotional representation of illness. Differences in illness perception between the 4 diagnostic groups, corrected for age, sex, hand dominance, and work type, were examined. Cohen D effect sizes were calculated for the between-group differences.
We included 514 patients in the analyses: 87 with CMC OA, 146 with Dupuytren disease, 129 with CTS, and 152 with TFS. On a scale ranging from 0 (most positive perception) to 80 (most negative perception) the Brief-IPQ sum scores for these subgroups were 42.0, 28.2, 38.8, and 33.3, respectively. Corrected for age, sex, hand dominance, and work type, patients with Dupuytren disease had a more positive perception of their illness than patients with CMC OA and CTS. Compared with CMC OA patients, the effect sizes for Dupuytren, CTS, and TFS patients were, respectively, 1.28, 0.32, and 0.81.
These differences should be considered during preoperative medical consultations and/or when investigating surgical outcomes.
In these patients with various hand/wrist disorders, differences were found in their preoperative perceptions of illness. Interventions that directly target negative illness perceptions might improve treatment outcomes for CMC OA and CTS.