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
Descripción
Sumario: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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