Ever since I can remember, my knees hyperextend. I've noticed this especially when I stand still, they seem to lock in a hyperextended position. Lately, after standing for about 5-10 minutes without moving, my knees are very sore and stiff. The only way to stop the pain, is to sit down for a few hours or ice them every so often.
There is no swelling, and the only other problem is that they sometimes just..give out.
Should I be trying to strengthen my hamstrings/quads? I tried doing that for about 6 months and it didn't seem to help with either problem.
Any advice would be greatly appreciated! Thanks!