Hand-held dynamometer to measure pressure pain thresholds: A double-blinded reliability and validity study

Dhinu J. Jayaseelan*, Keith R. Cole, Carol A. Courtney

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Background: Pain is the most common complaint reported in the musculoskeletal setting. Quantitative sensory testing (QST) assists with pain mechanism identification, although QST is typically performed in research settings. It is possible that clinical utilization of QST may improve if clinically accessible tools can be reliably and validly used. Objective: To determine if a hand-held dynamometer (HHD) can be a valid and reliable assessment of pressure pain threshold (PPT). Design: Double-blinded validation study. Methods: Eighteen healthy subjects (25.6 ± 3.4 years old) participated in this study. Two testers independently assessed PPT using a HHD and a digital algometer. Assessments followed previously described pressure algometry protocols. Testers and subjects were each blinded to data during assessments. Results: Intra- and inter-rater reliability were excellent for the foot and face for both devices (ICC's > 0.9). Bland-Altman plots and intraclass correlation coefficients revealed good-excellent agreement with minimal proportional bias when normalizing device force at pain threshold to the circumference of the device applicator (ICC 95%CI: 0.56–0.95). Only poor-good agreement (ICC 95% CI: 0.30–0.76) and significant proportional bias was observed when normalizing to area (pressure). Conclusions: Based on the results of this study, when force is normalized by circumference of the applicator, a HHD was found to be a valid and reliable tool for measuring PPT. Clinicians may use HHD to detect relevant pain mechanisms at fault in their evaluation and treatment of pain. Additional research in various pathologic populations is warranted.

Original languageEnglish (US)
Article number102268
JournalMusculoskeletal Science and Practice
Volume51
DOIs
StatePublished - Feb 2021

Keywords

  • Algometry
  • Pain mechanisms
  • Quantitative sensory testing
  • Spatial summation

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation

Fingerprint

Dive into the research topics of 'Hand-held dynamometer to measure pressure pain thresholds: A double-blinded reliability and validity study'. Together they form a unique fingerprint.

Cite this