Rehab Protocols
Interactive Knee Exam
Viscosupplementation

Post./Ant. Instability
  1. Lachman's Test
  2. Anterior Drawer Test
  3. Pivot Shift Test
  4. Tibial Drop Back Test
  5. Quads Active Test
  6. Posterior Drawer Test
  7. KNEE HOME
The quadriceps active test is performed with the knee flexed to 80° and in neutral rotation. Its starting point is in effect the tibial drop back test.
From its initial relaxed position at 80°, the patient is asked to fire their quadriceps muscle ("straighten out your leg") while the examiner applies counter pressure against the ankle.
The quadriceps pulls anteriorly through the tibial tubercle to reduce any posterior translation in the knee.
Initial starting point of the quadriceps active test (relaxed state).
Reduction of a posteriorly subluxed tibia with quadriceps contraction in a PCL deficient knee.