couldn't fully bend my knee for a year without any pain, even 90 degrees hurt after a long walk

suddenly it's almost brand new

really odd 

 Uhm... My knee sense are saying your meniiscus could be to be looked at.

Does it hurt or feel uncomfe when you go down steps?  

 i already consulted with @jpfrogmd  

the current plan is to finish the recovery routine, then go back to the physio and hopefully get an MRI if possible 

 Then you are in good frog hands 😁 
Wish you the best 💜🫂🍀 

 Well, my personal issues were breaking both ACL in two different episodes while playing volleyball.. and I got operation to reconstruct them both times. 

A lot time spent looking at them 😅.. jokes apart, after years of personal reading and studying (after I become a coach) I understood the problem originated and started from poor ankles and flat feet, so incorrect posture and knees alignment etc etc..

A lot of foot and lower body work, and barefoot shoes sinxe then.. can see and feel so many improvements 💪