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Related Experiment Videos

Quantitative abductor pollicis brevis strength testing: reliability and normative values.

F Liu1, L Carlson, H K Watson

  • 1Connecticut Combined Hand Service: Hartford Hospital, University of Connecticut, Connection Children's Medical Center, Hartford, CT, USA.

The Journal of Hand Surgery
|July 27, 2000
PubMed
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This study establishes reliable abductor pollicis brevis strength measurements using a hand-held device. Normative data show consistent strength in healthy adults aged 20-59, with higher values in men.

Area of Science:

  • Orthopedics
  • Neurology
  • Rehabilitation Medicine

Background:

  • Accurate assessment of hand muscle strength is crucial for diagnosing and managing various neurological and orthopedic conditions.
  • Establishing normative data and reliability for specific muscle groups, like the abductor pollicis brevis, is essential for clinical practice.

Purpose of the Study:

  • To determine the reliability and establish normative values for abductor pollicis brevis (APB) muscle strength.
  • To assess the influence of gender, age, side, and hand dominance on APB strength.

Main Methods:

  • A portable microprocessor-controlled hand-held dynamometer was utilized for quantitative muscle testing.
  • Intrarater and interrater reliability were assessed using intraclass correlation coefficients (ICCs) in 12 healthy subjects.

Related Experiment Videos

  • Normative values were collected from 297 healthy volunteers (121 men, 176 women, aged 20-59 years).

    • Main Results:

    • High reliability was demonstrated for the testing device, with ICCs of 0.92 for intrarater and 0.89 for interrater testing.
    • Significant differences in APB strength were observed between genders, with men exhibiting greater strength across all age groups.
    • No significant variations in strength were found based on age, tested side, or hand dominance within the studied population.

    Conclusions:

    • Quantitative muscle testing of the abductor pollicis brevis using the tested device provides reliable and consistent strength values.
    • The established normative data can aid clinicians in evaluating APB strength in adults aged 20-59.
    • APB strength remains relatively stable across this age range, with gender being a significant differentiating factor.