I broke my right knee 17 years ago. It took 6 months to heal to a point I didn't need to use any support. In the process of healing, I neglected making it straighten completely as a result, when standing, it won't lock back, so I need to keep constant muscle tension to put weight on the leg. This results in my knee being sore and makes it difficult to walk while the soreness dissipates. Not to mention that every time the weather changes, the point where it broke hurts like the devil. I'm used to this what with all the time elapsed.

However, just recently, my left knee wants to get in on this hurting when the weather changes and it gets a cramp in the tendon behind it when I sit too long. It's particularly bad when I first stand up and sometimes I think it's not going to support my weight when I walk.