I have had chondromalacia for about a year. Finally learning what the cause was and fixing it the pain has gone away for the most part.
Now however, while having started a job that requires a lot of knee bending (Federal Express) and lifting somewhat heavy packages (up to 75lbs, so not super duper in comparison to what a person would squat), I have tenderness around my knee area, it feels sort of like a bruise or muscle soreness after a workout, but my inner/outer thighs my hamstrings and my quads don't feel sore, just right around my knee especially right below (not inside but down toward the earth if im standing up) my kneecap. Also a little on the medial side of my knee a little.
Can anyone take an educated guess as to what this is, if it is tendon/muscle/ligaments that are just sore from work and are getting stronger, or if it could be something else?