That’s what it feels like, some soreness in a lateral band right at the base of the quadriceps, top of kneecap. I’ve had this periodically for well over a year, usually hurts if I’m carrying 25 lbs of cat litter up a flight of stairs, or something similar. Never bothered me on the bike, till this fall when I started increasing my weekly mileage. That increase was a result of a new and more comfortable saddles, better Assos shorts as well as successfully dealing with a butt area rash. So now I could ride 4-5 days in a row and now the knee is bothering me. Debating if my saddle is too low, maybe too much bend in the knee is causing some inflammation. I’ve been at the same seat height -71cm from center of crank, for a decade or more. Thinking maybe raise the seat to 72 or so. I’m 5’9” on a 56 ETT bikes, long torso, shorter legs. Cant remember my inseam.