I've got an appointment with an Orthopedic M.D. in about 1 week but thought I would post my knee pain situation to get some thoughts on what might be the cause. I'm a pretty good amateur doctor but this diagnosis has me stumped.
First let me say I am 41, 6' 190 and run/swim/cross train 6 days a week including 2-3 half-marathons a year. I'm a step ahead of weekend warriors and a 2-steps behind real athletes. I have NOT had previous knee pain or any acute knee injuries (twists, ligament or tendon issues, etc..). My knee feels "solid" when I exercise, not like it is going to "give" in.
I am able to walk and exercise on my knee normally with little to no pain although in the last week or so I have had some noticeable mild pressure and low pain when I am sitting but in general the pain is low (2 on a 1-10 scale).
The big issue I have is when I have my knee in any position for any amount of time (other than a 45 degree angle like sitting at a desk) when I go to move my knee it is frozen in place. Not locked. Frozen. With great effort due to the excruciating pain I can move my leg. Once I "warm" it up it is fine, except as described above. During this time the pain is a 8. For some time now I have had to "pop" my knee by applying slight pressure sideways to it to make it feel better. I also notice some grinding when I climb stairs. Climbing stairs = a pain level of 3-4.
I assumed I had tendinitis for quite a while but having read a little I think I have something different. Any thoughts on possible diagnoses to research would be helpful.
Thanks!