<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing ankle pain, muscle pain, and elbow pain. I am also having problems with movement and occasionally experience heartburn. What could this be?  <response>: Based on your symptoms, it sounds like you may have a bone spur of the calcaneus, which is a bony growth on the heel bone that can cause pain and discomfort. 