Thermal and pressure pain sensitivity in patients with unilateral shoulder pain: Comparison of involved and uninvolved sides

Rogelio A. Coronado, Lindsay L. Kindler, Carolina Valencia, Steven Z. George

    Research output: Contribution to journalArticlepeer-review

    20 Scopus citations

    Abstract

    STUDY DESIGN: Cross-sectional. BACKGROUND: In the examination of patients with unilateral shoulder pain, pain provocation testing to compare the involved and uninvolved sides has been considered useful. However, side-to-side comparisons of experimental pain sensitivity in patients with unilateral shoulder pain are not widely reported in the literature. OBJECTIVES: To compare experimental pain sensitivity between the involved and uninvolved sides in patients with unilateral shoulder pain. METHODS: In consecutive patients seeking operative treatment for shoulder pain, sensitivity measures of bilateral pressure pain threshold at the shoulder and forearm, and thermal pain threshold, tolerance, and temporal summation at the forearm, were examined. Pressure sensitivity was tested with a Fischer pressure algometer, and thermal sensitivity with a computer-controlled Medoc neurosensory analyzer. The involved and uninvolved sides were compared with an analysis of variance. Influence of sex and location of testing were considered as covariates in the analysis. RESULTS: Fifty-nine consecutively recruited participants completed experimental pain sensitivity testing. Participants reported significantly lower pressure pain thresholds in the involved side compared to the uninvolved side (F 1,56 = 4.96, P = .030). In addition, female compared to male participants demonstrated lower pressure pain thresholds in the bilateral shoulder regions (F1,56 = 10.84, P = .002). There was no difference in thermal pain sensitivity between sides. Average clinical pain intensity was negatively correlated with pressure pain threshold at the involved local site (r = -0.284, P = .029), indicating an influence of clinical pain intensity on local pressure pain. CONCLUSION: The results of this study provide evidence for higher experimental pressure pain sensitivity in the involved side of patients with unilateral shoulder pain and no difference between sides for thermal pain sensitivity. Females demonstrated higher pain sensitivity than males to pressure stimuli at the local shoulder region but not at the distal regions. Future studies should incorporate multiple stimuli when describing the pain profile of clinical populations. J Orthop Sports Phys Ther 2011;41(3):165-173, Epub 10 November 2010.

    Original languageEnglish (US)
    Pages (from-to)165-173
    Number of pages9
    JournalJournal of Orthopaedic and Sports Physical Therapy
    Volume41
    Issue number3
    DOIs
    StatePublished - Mar 2011

    Keywords

    • Clinical examination
    • Pain
    • Shoulderl

    ASJC Scopus subject areas

    • Physical Therapy, Sports Therapy and Rehabilitation

    Fingerprint Dive into the research topics of 'Thermal and pressure pain sensitivity in patients with unilateral shoulder pain: Comparison of involved and uninvolved sides'. Together they form a unique fingerprint.

    Cite this