Type IV Posterior Dislocation of the Acromioclavicular Joint

KS Yu, MF Lee, LF Chau

Hong Kong J Radiol 2001;4:231-3

A case of type IV injury of the right acromioclavicular joint dislocation is described Detection of a type IV injury is important because surgery is advised. Computed tomography scanning is necessary to confirm the clinical suspicion of a type IV injury, especially in patients with multiple injuries or those with painful injuries which preclude taking an axillary view or a Stryker notch view.