Hi, your post interests me as I too have an atrophyed muscle in my calf. I noticed the dent in my leg about 6 weeks ago but had only an occasional ache in this area and it did not affect my running so I did not think a great deal about it. I have had a small decrease in muscle size and 2 weeks ago I developed knee pain and swelling I assume because of losing the muscle support. The knee problem has kept me from running! Unlike you I have no back pain nor have I ever had a back problem. You said your concern is not with pain but do you have pain in the area? My chiro sent me to an ortho unfortunately the ortho did not seem concerned with the atrophied muscle even tho I kept telling him it all started with this. I did let him give me a cortisone shot in my knee. And unless it is my imagination I have started having some minor stinging sensation in different areas. The stinging he was not concerned with either. I am desperately looking for answers as I am almost sedentary since the knee problem. In my opinion the cause of the atrophied muscle should be the main concern. Any information would be would be greatly appreciatedView Thread