Quadraceps lag

[tuuliki]

What happens with active lag in gravity eliminated positions? still lag (aka no change)? gets corrected?

added later: found an article that said that extensor lag may be caused by muscular weakness, joint distension, joint stiffnes and pain but I found a test online with multiple choice questions and this asked the cause and gave four poosible options: with TKR what could be the reason for a lag? quad inhibition? swelling and pain? prior weakness? hamstring tightness?

So a bit confused

Heaps of thanks to anybody who is willing to share their thoughts

[abdurrasyid]

Quadricep lag cause of VMO muscle was not active, and it call muscle imbalance. It need to re-analysis muscle tigthness n function of proximal core stability

Rasyid, from indonesia