Injury and preoperative and postoperative status of a 68-year-old woman. Right distal clavicle fracture (Neer type II) (A). Clavicular hook plate fixation was performed, but the hook plate was not modulated well (B). Patient complained of omalgia after internal fixation for 3 months (C). After removal of internal fixation (D) and 1 month later (E), omalgia was relieved. The arthroscopy revealed that the hook plate compressed the supraspinatus muscle (F).