Fractured coracoid process with acromioclavicular joint dislocation: A case report

RATIONALE: Coracoid processes (CPs) fracture with acromioclavicular (AC) joint dislocation are extremely rare. This combined injury has brought many challenges to surgeons, and the mechanism underlying the injury is still not fully understood. There is no clear consensus on its treatment. PATIENT CONCERNS: Here, we describe a CP fracture with AC joint dislocation in a middle-aged manual worker. DIAGNOSIS: Radiographs showed a fracture of the base of the CP and a third-degree AC joint separation. INTERVENTIONS: The patient was treated surgically with open reduction and internal fixation of the AC joint by LCP clavicle hook plate, and the CP was fixed with a 3.5 mm diameter cannulated screw. OUTCOMES: Three months after the operation, shoulder function was completely restored, and the affected shoulder had full mobility with no tenderness. Plain film radiography showed anatomical indications of the healing of these combined injuries. LESSONS: Although AC joint dislocation with CP fractures is extremely rare in adults, it is important to remind and remember that this possibility exists. In unclear cases, special radiographic films and CT are necessary. Surgical treatment of AC joint dislocation with CP fractures can provide solid stability and restore normal shoulder function with an excellent prognosis.