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A Positive Quadriceps Active Test, without the Quadriceps Being Active.

David Christopher KieserE SavageP Sharplin
Published in: Case reports in orthopedics (2019)
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.
Keyphrases
  • anterior cruciate ligament reconstruction
  • total knee arthroplasty
  • smooth muscle
  • anterior cruciate ligament