Oh dear, you do not have atrophy, you were tested few days ago by two very sensitive methods which should reveal changes in your muscle innervation well before atrophy.Well, our leg and hand muscles are made of long bundles directed alongside the bones. So when the muscles loss innervation, they loss it 'bundlewise', so longitudal pieces of muscular tissue become useless, lose weight etc. so any dents appearing should obviously be more or less longwise. If you have any very old relatives, take a chance to look on their calves or shoulders - you would see wabby wasted muscles (becasue with the age it is natural to have muscular wasting due to much slower growth process), hanging like flags... that is how atrophy looks like (more or less). So having a circualr shape dent means it is a mark from previous impact injury or pressure injury, and it is related to the loss of subcutaneuous tissue. Cellulitis makes "dents" more or less parallel to the ground , while should you have muscle devastation, you A) woiuld notice the muscle does not do its job, B) would have rather longitudal marks (I am not medically sure but all logic says about that)Photos of well developed atrophy demonstrate no dents but rather it looks like muscles are wrapping the bones more tight however being thinner.