Knee Kinesiography



Dr. Guy Grimard, Orthopaedic surgeon, Canada
“As a surgeon, the information provided by KneeKG allows me to better understand residual functional problems post-ACL reconstruction. It helps us develop a better plan of action rather than the usual guess work. Helping get young athletes back to their level of performance is my goal and the more objective information we have, the better it is.”

  • 16 y/o female soccer player with persistent anterior knee pain 12 months post-ACL reconstruction
  • Reports sensation of instability, unable to return to sporting activities
  • Symptoms are also present during prolonged sitting and standing and during squatting
  • Stabilization brace does not provide sensation of stability
  • Pre-op KneeKG exam showed adapted compensation mechanism to stabilize the

knee through dynamic flexion contracture and an external leg rotation; a valgus collapse during stance was also noted which increases lateral compressive forces and greater internal tibial rotation


  1. Flexion contracture at heel strike & stance phase remains > increases PF loads
  2. Valgus collapse during stance > contributes to internal rotation, increases the Q angle and lateral loads
  3. High internal/external rotation variability > sign of axial instability