neck cracker neuropathy 

NEUROLOGY

A clinical condition affecting those who habitually crack their cervical spine, a manoeuvre that can trigger spinal accessory nerve neuropathy, and lead to atrophy of the trapezius, slowed conduction of the spinal accessory nerve, and winging of the scapula.

Reference NEJM 1988; 318(16):1072–KR Nelson, P Tibbs