Surgical fixation of Rookwood Type III–V acromioclavicular joint dislocation with acromioclavicular: Hook plate

Abstract

Context: Acromioclavicular (AC) joint dislocation is one of the common shoulder problems accounting for 9% of all shoulder injuries and occurs five times more frequently in men than in women. Aims: In the present study, we aim to assess the functional outcome of hook plate fixation for the treatment of acute Rockwood Type III–V AC joint dislocation and to know the complications associated with the implant. Settings and Design: This was a prospective study. Subjects and Methods: Twenty patients, both male and female, with a mean age of 42 years who had acute dislocation of the AC joint were included for the study. Nine patients had Type III, four patients had Type IV, and 7 patients had Type V dislocation according to Rockwood classification. Patients were followed up till 6 months and were evaluated using Constant–Murley score. Statistical Analysis used: For the statistical analysis, descriptive statistics were calculated with the objective of summarizing the set of data analyzed. Results: The mean Constant–Murley score was 82.5 at 6-month follow-up. Four patients had complications of which one had superficial infection, two had subacromial erosion, and one had osteoarthritis of AC joint. Conclusions: Radiographic outcome based on the maintenance of reduction indicates that hook plate fixation is a better treatment option and is an effective method for the treatment of AC joint dislocation. Osteoarthritis and osteolysis are two common complications, which are associated with impairment of shoulder function. Shoulder function will be improved after the removal of hook plate.