knee injury.... what is causing this... HELP...?

[Dea B]

so i know that i have posted alot about this over the past few weeks but this is relativity new...

my knee gave out 4 weeks ago and it is suspected that i have damage to my ACL, a partially torn MCL, as well as a possible chonral fracture to my patella...

well yesterday while i was working on trying to regain some ROM i noticed that i upon extending my knee i had a sharp pain around the medial aspect of my patella and since my knee cap as been extra sensitive to touch on the inside...

could this be caused by the possible chondral fracture, or is it due to the ligament injuries

i plan on telling the therapist tomarrow when i go to PT, as i am certain it will be aggravated again during PT... but i was just wondering what could be causing the tenderness to my patella...

when i went to the knee specialist that my ortho sent me to he asked if i had ever dislocated my patella, because he said that it was very loose and indictive of a dislocation(i dont recall ever doing that