Voluntary acromioclavicular joint dislocation: a case report and literature review

Voluntary glenohumeral dislocations have been reported in academic literature; however, voluntary dislocations of the acromioclavicular joint are rare, with four cases previously reported in published literature. We present a case of an adolescent female with bilateral, atraumatic acromioclavicular joint dislocation who ultimately was treated with arthroscopic reconstruction of the coracoclavicular ligament. The case is discussed in addition to a review of previously reported cases of voluntary acromioclavicular joint dislocations. Treatment methods in each of the four previously reported cases are discussed with recommendation for surgeons that may encounter this rare shoulder problem in future patients. (C) 2019 Journal of Shoulder and Elbow Surgery Board of Trustees. All rights reserved.