Scientific article
Predictors of Pain Intensity and Disability After Minor Hand Surgery

https://doi.org/10.1016/j.jhsa.2010.02.001Get rights and content

Purpose

To test the null hypothesis that there is no relationship between coping mechanisms and depression measured before surgery, and pain intensity and disability after surgery, as assessed at the time of suture removal.

Methods

A total of 120 patients (39 electing surgery for carpal tunnel syndrome, 65 for trigger finger, and 16 for a benign tumor) completed questionnaires measuring depression, pain self-efficacy (confidence that one can perform various activities despite pain), pain anxiety (fear and anxiety in response to pain sensations), and pain catastrophizing (maladaptive cognitive activities such as pain-related rumination, magnification, and helplessness) before surgery. Before the surgery and at the time of suture removal (10 to 14 days after surgery) participants completed the Disabilities of the Arm, Shoulder, and Hand questionnaire (DASH) and a numerical pain intensity rating scale.

Results

At the time of suture removal, there was a significant correlation between pain intensity and depression (r = 0.45, p<.001), pain catastrophizing (r = 0.41, p<.001), pain anxiety (r = 0.32, p<.01), and self-efficacy (r = −0.29, p<.01). Disability correlated with self-efficacy (r = −0.34; p<.001) and depression (r = 0.49; p<.001), but not with pain anxiety and catastrophizing (p>.05). In multivariate analyses, depression was the sole predictor of both disability and pain intensity and accounted for 26% of the variance in DASH scores and 25% of the variance in pain intensity, after removing the influence of preoperative DASH and diagnosis, which accounted for 14% variance.

Conclusions

Psychosocial factors, especially depression, explain a notable proportion of the variation in pain intensity and disability after minor hand surgery.

Type of study/level of evidence

Prognostic I.

Section snippets

Materials and Methods

All adult, English-speaking patients who requested surgery for electrodiagnostically confirmed idiopathic median nerve dysfunction at the carpal tunnel, TF, or a benign hand tumor were invited to enroll under a protocol approved by our Human Research Committee. Patients requesting revision of prior surgery for the identical problem were excluded. The study was described in detail and the 3 treating surgeons and study staff obtained informed consent. No eligible patient declined enrollment. We

Preoperative assessment

There were no significant differences in pain catastrophizing (mean, 20.5; SD, 8.3), pain anxiety (mean, 17.9; SD, 19.3), pain self-efficacy (mean, 48.9; SD, 13.4), depressive symptoms (mean, 2.9; SD, 3.2), or pain (mean, 4.3; SD, 2.8) among categorical demographics variables, or the 3 diagnostic groups (p<.05). However, there was a significant difference in presurgery disability (mean, 50.4; SD, 18.3) among patients in the 3 groups (p=.003). Post hoc analyses using the Bonferroni correction

Discussion

Our findings are consistent with prior work and show that depressive symptoms are a key variable in reports of disability and pain intensity after surgery.6, 24, 25, 26 This suggests the possibility that some of the disproportionate pain and disability after otherwise uncomplicated and objectively successful surgery may be a function of untreated depressive symptoms. Future studies should replicate this finding by carefully assessing and controlling for other factors related to unsuccessful

References (36)

  • M. Bhandai et al.

    Health-related quality of life following operative treatment of unstable ankle fractures: a prospective observational study

    J Orthop Trauma

    (2004)
  • A.F. Mannion et al.

    Predictors of surgical outcome and their assessment

    Eur Spine J

    (2006)
  • P.H. Rosenberg et al.

    Psychosocial factors and surgical outcomes: an evidence-based literature review

    J Am Acad Orthop Surg

    (2005)
  • P.M. Trief et al.

    Emotional health predicts pain and functioning after fusion: a prospective multicenter study

    Spine

    (2006)
  • D.E. DeGood et al.

    Assessment of pain beliefs and pain coping

  • T.W. Smith et al.

    Cognitive distortions and psychological distress in chronic low back pain

    J Consult Clin Psychol

    (1986)
  • T. Pincus et al.

    A systematic review of psychological factors as predictors of chronicity/disability in prospective cohorts of low back pain

    Spine

    (2002)
  • S.R. Woby et al.

    Does coping mediate disability in chronic low back patients presenting for physiotherapy?

    J Bone Joint Surg

    (2002)
  • Cited by (188)

    View all citing articles on Scopus

    D.R. received unrestricted research grants from Acumed and Tornier. D.R. received royalties from Hand Innovations and is a consultant for Wright Medical, Acumed, and Tornier.

    View full text