First of all I'd like to say that I'm on the computer a lot with a terrible posture, and this might be the cause of my lower back pain however I don't see how it could cause knee/ankle pain.
Sometimes when I walk, I feel pain on the back of my knees.
I went for an x-ray and an ultrasound for my knees, but the doctors said that everything was fine. Sometimes if I place my hands on my knees I feel things moving underneath my skin. This happens to my sister as well, and my friend says this happens to him sometimes - is this normal? Sometimes if I'm just lying down, with my knee bent and I move it left and right I hear and feel my bones shifting or something of the sort.
Lately, after walking for long periods of time, I also get back pain.
Today I have experienced pain on my lower calf, in the front. If I flex my left foot, point it up in a 90 degree angle or point it straight like a ballerina, it hurts.
Any idea what may be the problem?
I'm a teenager, if that changes anything.
Thank you for reading!