Back Of Knee Pain More Condition_symptoms I Have Pain In The Back Of My Knee, Maybe More On The Lower Leg/calf Area.?

I have pain in the back of my knee, maybe more on the lower leg/calf area.? - back of knee pain more condition_symptoms

If you extend the leg after he folded sittiing regularly or as curled up on the sofa, I feel pain behind the knee in a straight line. So when I go into the IT, I believe that my knee gives me, and I lag a few seconds before I was able to walk normally. It does not seem to have pain when walking or exercising. Ideas?