Knee pain / Front and back as well swollen

[Thinger]

I am not able to kneel on my knees at all, bending my right knee past 90 degrees causes terrible pain ans stiffness. I am thinking this is because it's swollen?? I play hockey and have never had any injuries at all. Maybe wear and tear. I had x-rays but they came back negative. I also have sharp pains from time to time on the inside of my right knee like someone has stuck a knife in there.

Any thoughts?

[Heidi]

Hi
The cause of your knee pain could be many things. However the most common injuries to occur at the knees without any sort of trauma is patellofemoral pain or anterior knee pain. Find out some more here:

http://www.sportsinjuryclinic.net/cybertherapist/front/knee/patellofemoral_pain_syndrome.php