Score: Rockwood's classification

Use: Acromioclavicular joint injury

Type I

Sprain of the acromioclavicular or coracoclavicular ligament

Type II

Subluxation of the acromioclavicular joint associated with a tear of the acromioclavicular ligament, but the coracoclavicular ligament is intact

Type III

Dislocation of the acromioclavicular joint with injury to both acromioclavicular and coracoclavicular ligaments

Type IV

Clavicle is displaced posteriorly through the trapezius muscle

Type V

Gross disparity between acromion and clavicle which displaces superiorly

Type VI

Dislocated lateral end of clavicle lies inferior to the coracoid

Reference

Classification and Diagnosis in Orthopaedic Trauma. Editors: Rahij Anwar, Kenneth W. R. Tuson, Shah Alam Khan. Cambridge University Press, 2008