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Isolated finger flexion force--a methodological study

A Ejeskär, R Ortengren

    The Hand
    |October 1, 1981
    PubMed
    Summary
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    This study establishes normal values for isolated finger flexion force using a standardized grip method. Men exhibit greater finger strength than women, with significant individual variations observed.

    Area of Science:

    • Orthopedics
    • Biomechanics
    • Hand Surgery

    Background:

    • Assessing isolated finger flexion force is crucial for evaluating hand function.
    • Standardized measurement methods are needed to establish normative data.
    • Understanding sex-based differences in finger strength is important for clinical interpretation.

    Purpose of the Study:

    • To present a standardized method for measuring isolated finger flexion force in a transverse volar grip.
    • To provide normal values for finger flexion strength in healthy adults.
    • To explore potential clinical applications of these measurements, such as assessing recovery after surgery.

    Main Methods:

    • A standardized method was developed to measure isolated finger flexion force.
    • Forty healthy subjects participated in the study.

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  • Measurements were taken using a transverse volar grip.
  • Main Results:

    • Mean finger flexion force ranged from 5.9 to 10.6 kiloponds (kp), with the middle finger being the strongest.
    • Significant individual variations in force were observed, particularly in men.
    • Men demonstrated significantly greater finger strength than women across corresponding digits.
    • Good hand symmetry in finger strength order was noted in both sexes, especially women.

    Conclusions:

    • The established method provides normative data for isolated finger flexion force.
    • Finger strength differs between sexes and shows considerable individual variability.
    • The strength ratio between dominant and non-dominant hands may aid in assessing recovery post-tendon surgery.
    • Correlation with vigorimetric hand grip strength is limited for individual patient evaluation.