J Orthop Trauma 26 (4): 246 - 51, 2012. doi: 10.1097/BOT.0b013e3182243909 Inferior Shoulder Dislocations Inferior dislocations (luxatio erecta) are rare and usually clinically obvious; patients hold their arm over their head (ie, abducted to almost 180°), usually with the forearm resting on the head.