Does anyone know what is the cause of large dimple like indentions on knees, elbows etc. I first noticed one of these areas below my rib cage. I have this hallowed out area that my boyfriend thought was caused by an operation. I have recently noticed them on my elbows and knees as well. They look like giant dimples with no flesh between the skin and bones.
Edited March 16, 2012 at 12:44 am