Hand-held dynamometer identifies asymmetries in torque of the quadriceps muscle after anterior cruciate ligament reconstruction

Purpose To verify the validity and diagnostic accuracy of the hand-held dynamometer (HHD) with the isokinetic dynamometer for evaluating the quadriceps strength of subjects who have undergone ACL reconstruction (ACLR). Methods This validity and diagnostic accuracy study was conducted prospectively b...

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Published inKnee surgery, sports traumatology, arthroscopy : official journal of the ESSKA Vol. 27; no. 8; pp. 2494 - 2501
Main Authors Almeida, Gabriel Peixoto Leão, Albano, Thamyla Rocha, Melo, Antônio Kayro Pereira
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.08.2019
John Wiley & Sons, Inc
Subjects
Accuracy
Anterior cruciate ligament
Confidence intervals
Correlation coefficient
Correlation coefficients
Diagnostic systems
Knee
Medicine
Medicine & Public Health
Muscles
Orthopedics
Quadriceps muscle
Torque
Validity
Knee
Quadriceps muscle
Hand-held dynamometer
Return to sport
Muscle strength measurement
Anterior cruciate ligament
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Summary:Purpose To verify the validity and diagnostic accuracy of the hand-held dynamometer (HHD) with the isokinetic dynamometer for evaluating the quadriceps strength of subjects who have undergone ACL reconstruction (ACLR). Methods This validity and diagnostic accuracy study was conducted prospectively by examining 70 consecutive participants who had undergone ACLR at least 6 months previously. All participants performed strength evaluation of the quadriceps muscle using the HHD and isokinetic dynamometer. Results The HHD presented high test–retest reliability [intraclass correlation coefficient (ICC) = 0.98], moderate to good validity with the isokinetic dynamometer when compared for the quadriceps strength ( r  = 0.62), 100% perfect specificity [LR + infinity, 95% confidence interval (CI) 81.4%–100%] to identify those with LSI > 10%, and a sensitivity of 63.4% (48.9%–76.3%). Conclusion The HHD is an instrument valid and reliable of low cost and easy handling compared to the isokinetic dynamometer to evaluate the quadriceps torque and the limb symmetry index after the ACLR with high diagnostic accuracy. Level of evidence I.
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ISSN:0942-2056
1433-7347
1433-7347
DOI:10.1007/s00167-018-5245-3