Smith D W
Lancet. 1978 Apr 8;1(8067):747-9. doi: 10.1016/s0140-6736(78)90860-7.
A protruding auricle is usually associated with a defect in development or function of the posterior auricular muscle, which normally draws the pinna towards the calvarium. Hence, a protruding auricle may be a sign of a neuromuscular disorder, as is ptosis.
