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Updated: Feb 23, 2026

Measurement of Spatial Stability in Precision Grip
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Grip strength feigning is hard to detect: an exploratory study.

Jan Vollert1, Carina Pasqualicchio1, Mike Papenhoff2

  • 11 Department of Pain Medicine, BG University Hospital Bergmannsheil GmbH, Ruhr University Bochum, Bochum, Germany.

The Journal of Hand Surgery, European Volume
|August 31, 2017
PubMed
Summary
This summary is machine-generated.

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Detecting feigned grip strength weakness is challenging. This study found no reliable grip strength test parameters to distinguish between injured patients and individuals faking weakness for individual diagnosis.

Area of Science:

  • Rehabilitation Medicine
  • Neurology
  • Orthopedics

Background:

  • Distinguishing submaximal effort in grip strength testing is difficult.
  • Previous research focused on healthy individuals faking weakness, not injured patients.
  • The clinically relevant distinction is between injured patients and feigning participants.

Purpose of the Study:

  • To compare rapid exchange grip and isometric grip strength testing.
  • To identify parameters differentiating feigning participants from patients with decreased hand function.
  • To assess the utility of grip strength parameters in detecting feigned weakness.

Main Methods:

  • Recruited 41 participants feigning weakness and 39 patients with decreased hand function.
  • Recorded various grip strength parameters during rapid exchange grip and isometric grip strength tests.
Keywords:
Feigning grip strengthforce-time curveisometric grip strength testingmalingeringrapid exchange grip

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  • Analyzed recorded parameters for significant differences between the groups.

    • Main Results:

    • Maximum grip strength during rapid exchange grip was significantly higher in feigning participants versus patients.
    • This single parameter is insufficient for individual diagnostic decisions.
    • No other tested parameters proved useful for detecting feigned weakness in individual cases.

    Conclusions:

    • Current grip strength testing methods, including rapid exchange and isometric tests, have limitations in detecting feigned weakness.
    • No specific grip strength parameter reliably differentiates feigning individuals from patients with genuine hand dysfunction on an individual basis.
    • Further research is needed to develop reliable methods for identifying malingered grip strength deficits in clinical settings.