Preoperative indicators of the effectiveness of surgical release in de Quervain patients: a prospective cohort study.

BACKGROUND:A significant proportion of patients still report pain following a surgical release for de Quervain disease (DQ). This study aimed to investigate the effectiveness of a surgical release for DQ and to identify the preoperative factors associated with pain after a surgical release for DQ. METHODS:This prospective cohort study includes 707 patients who underwent a surgical release and completed the Visual Analog Scale Questionnaire (VAS, range 0-100). We used a paired t-test to analyse the effectiveness of the surgical release on pain at three months post-operatively compared to the pre-operatively measured outcome. A hierarchical multivariable linear regression model was created to investigate the contribution of the patient- and disease characteristics to post-operative pain. RESULTS:All VAS domains showed improvement after surgical release. On average, the mean VAS pain decreased by 44 points (95% CI 42; 46). Smoking (B=6.37; p<0.01), younger age (B=-0.35; p<0.01), longer duration of complaints (B=0.13; p<0.01), concomitant surgery (B=14.40; p<0.01) and higher VAS pain scores at intake (B=0.15; p<0.01) were associated with worse VAS pain scores post-operatively. Together, the variables explained 11% of the variance in mean VAS pain score at three months of follow-up. CONCLUSION:This study confirms that surgical treatment for patients with DQ significantly reduces patient-reported pain. Smoking, younger age, concomitant surgery, duration of complaints, and higher VAS pain scores at intake are associated with worse patient-reported pain three months after surgical release. However, the small effects suggest that these factors should not be considered the only important factors. LEVEL OF EVIDENCE:Therapeutic, II.