الفهرس 
Anatomy and IncidenceOnly 14 pages are availabe for public view
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Abstract
Background: the hook plate metallic device showed early promise as an alternative implant to treat unstable acromioclavicular joint dislocation injuries. The hook plate can be used to provide an indirect reduction of a distal clavicle fracture. This indirect reduction technique is useful for comminuted fractures or fractures with very small distal fragments in which conventional reduction and fixation is difficult.
Aim of the Work: to evaluate the treatment of acute acromioclavicular joint dislocation and radiographic outcomes.
Materials and Methods: Studies were considered eligible if they expressed treatment of acromioclavicular joint dislocation using the hook plate and described the patient’s clinical and functional outcomes; intra-operative, post-operative complications, full-text articles were available, randomized controlled trials, including cluster RCTs, controlled (non-randomized) clinical trials or cluster trials, prospective and retrospective comparative cohort studies, and case-control or nested case-control studies. We will exclude cross-sectional studies, case series, case reports and literature not in English.
All items that didn’t match the above criteria were excluded.
Results: The total studies included 270 patients with average mean age 35.5 years and mean follow up 25.33 months. The Constant Murely score average 84 points (The CMS was developed for the evaluation of shoulder function with subjective and objective components) and the p value <.05 that means all patients had significant improvement. Full range of motion could be achieved in the patients. Patients with restrictions of range of motion mainly showed limitations in abduction and external rotation. These limitations are most probably caused by the post-operative immobilization, which is necessary after implantation of hook plates to ensure healing of the ligament structures and avoid damage of the acromion by the hook itself. Other studies also showed restrictions of range of motion for abduction and external rotation after hook plate implantation.
Conclusion: it has a good to excellent Constant Murely score (full range of motion) that enables quick return to activities. It is useful for (Rockwood III-VI). So good clinical results can be achieved with hook plate.