It showed i had no ligiment damage or arthritis in my knees so why are they so swollen and they hurt. They get swollen very often. I dont know why this is if i dont have athritis and or any torn ripped ligiments

Ok so Im a 16 year old male and for about a year I have had pain in one of my knees, it comes and goes randomly but when it happens it hurts to bend it or move it at all. But about 3months ago more joints have bothered me they arent in pain but they irritate and I just have to move them in odd ways. Id like to also point out I was in a car accident last year where the knee bothering me now was hurt. I really doubt anything is broken cuz i doubt i could walk on it at all and if something was torn it would hurt constantly wouldnt it, but i started to think of juvenile arthritis but theres rarely swlling and i dnt have a fever. Any ideas or suggestions on what it could be? or things i should ask my doctor about?

I am seeing the doctor tomorrow, but just in case he does not know and sends me for a few weeks of tests, i was wondering if anyone might have a guess, that i could suggest to the doc.

been going on for two weeks. i have Psoriatic arthritis, a type of arthritis that does not stay in one joint, but moves to other joints, and i can be pain free for months, or the pain can be no worse then when you strain a muscle. i do not believe it is Psoriatic arthritis.

knee hurts all the time, can not put weight on it, bend it, straighten it, lay down or elevate it. extreme pain when knee is at its bending limits, fully straight or fully bent.

no swelling, not warm, not painful to touch. no loss of feeling or discoloration to rest of leg.

pain is in the knee, under knee cap, not in a muscle.

pain can not be pinpointed to a part of the knee.

foot is turned about 1/4 turn out. meaning, when standing straight, both feet should be side by side and pointing straight ahead. mine, points about a 1/4 turn outward. it is the right knee, so the foot points away from my body. normally, both feet would be at "12 o’clock".. one of mine is at "12 o’clock" the other is at 2 o’clock".
i can turn it straight, with no more pain than anything else, but it does not feel normal. like when you turn your foot a 1/4 turn, you have to hold it there. if you take a step, it returns to straight, unless you hold it out.
i did not notice the 1/4 turn until yesterday, i do not believe it has been that way for two weeks, i think the foot just turned.
i realize we will hold a foot in an unnatural stance when in pain, if that feels better, but i am not holding it turned.

any guesses?