A Positive Quadriceps Active Test, without the Quadriceps Being Active

CASE: A 55-year-old male with a chronic isolated grade 3 PCL injury who demonstrates a positive quadriceps active test without activating his quadriceps musculature. CONCLUSION: Gravity and hamstring contraction posteriorly translate the tibia into a subluxed position. Subsequent gastrocnemius contr...

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Detalles Bibliográficos
Autores principales: Kieser, D. C., Savage, E., Sharplin, P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2019
Materias:
Case Report
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6949672/
https://www.ncbi.nlm.nih.gov/pubmed/31956458
http://dx.doi.org/10.1155/2019/6135632
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author Kieser, D. C.
Savage, E.
Sharplin, P.
author_facet Kieser, D. C.
Savage, E.
Sharplin, P.
author_sort Kieser, D. C.
collection PubMed
description CASE: A 55-year-old male with a chronic isolated grade 3 PCL injury who demonstrates a positive quadriceps active test without activating his quadriceps musculature. CONCLUSION: Gravity and hamstring contraction posteriorly translate the tibia into a subluxed position. Subsequent gastrocnemius contraction with the knee flexed causes an anterior tibial translation by virtue of the mass enlargement of the gastrocnemius muscular bulk, the string of a bow effect, and the anterior origin of the gastrocnemius in relation to the posterior border of the subluxed tibia aided by the normal posterior tibial slope.
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spelling pubmed-69496722020-01-17 A Positive Quadriceps Active Test, without the Quadriceps Being Active Kieser, D. C. Savage, E. Sharplin, P. Case Rep Orthop Case Report CASE: A 55-year-old male with a chronic isolated grade 3 PCL injury who demonstrates a positive quadriceps active test without activating his quadriceps musculature. CONCLUSION: Gravity and hamstring contraction posteriorly translate the tibia into a subluxed position. Subsequent gastrocnemius contraction with the knee flexed causes an anterior tibial translation by virtue of the mass enlargement of the gastrocnemius muscular bulk, the string of a bow effect, and the anterior origin of the gastrocnemius in relation to the posterior border of the subluxed tibia aided by the normal posterior tibial slope. Hindawi 2019-12-27 /pmc/articles/PMC6949672/ /pubmed/31956458 http://dx.doi.org/10.1155/2019/6135632 Text en Copyright © 2019 D. C. Kieser et al. http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Case Report
Kieser, D. C.
Savage, E.
Sharplin, P.
A Positive Quadriceps Active Test, without the Quadriceps Being Active
title A Positive Quadriceps Active Test, without the Quadriceps Being Active
title_full A Positive Quadriceps Active Test, without the Quadriceps Being Active
title_fullStr A Positive Quadriceps Active Test, without the Quadriceps Being Active
title_full_unstemmed A Positive Quadriceps Active Test, without the Quadriceps Being Active
title_short A Positive Quadriceps Active Test, without the Quadriceps Being Active
title_sort positive quadriceps active test, without the quadriceps being active
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6949672/
https://www.ncbi.nlm.nih.gov/pubmed/31956458
http://dx.doi.org/10.1155/2019/6135632
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