See http://nip.4-all.org for a free motion palpation e-course for chiropractors. Dr Neil Davies, Chiropractor, describes the scapulohumeral reflex and its application to confirmation of the C5 subluxation, compression to the dorsal scapular nerve or scapular subluxation. He maintains that chiropractors who use neurological tests as well as motion palpation findings may have increased success in confirming the vertebral subluxation.