osteoarthritis
"I have one hip that is now bone on bone apparently. I have limited lateral mobility and know I limp at times. I have had steroid injections which were great until they no longer relieved my pain. I was pretty miserable and found myself sitting a lot. My pain is greatly relieved with diclofenac. However, I'm concerned my heart may be stressed as I experience  being out of breath and my heart beating hard with fairly minimal exertion at times  such as carrying a big armful of clean 
laundry up a flight of stairs. My heart is just pounding! I exercise regularly, 
"