Background: The treatment for acromioclavicular joint injury are debatable, there are fixation options include tension band wiring, AC joint reconstruction and hook plate These fixations are capable of providing a stable fixation, but controversy still exists that mentions the superiority of each of these fixationsPurpose: To compare biomechanical stability of 3 fixation include tension band wiring, double endo button, and hook plate to provide a scientific basis of the fixation.Methods: This research is an experimental in vitro. Using 27 acromioclavicular joints cadaver divided into three groups that performed tension band wiring fixation, double endo button and hook plate. Each fixation evaluated with 10, 20, 50 and 100 times repetitions with 100N traction force.Results: Tension band wiring gives the smallest displacement. In 10 times repetition average displacement of tension band wiring 0.056 mm (p = 0.000) compared to double endo button 1.622 mm and hook plate 0.867 mm. In 20 times repetitions, tension band wiring 0.1667 mm (p = 0,000) compared to double endo button 3.1778 mm and hook plate 1.1111 mm. In 50 times repetition, tension band wiring 0.3111 mm (p = 0.000) with double endo button 4.7778 mm and hook plate 1.3556 mm. In 100 times repetitions, tension band wire 0.556 mm (p = 0.000) while double endo button 5.4444 mm and hook plate 1.4556 mm.Conclusion: Tension band wiring have a good stability compared to double endo button and hook plate. But all of fixation provide stability for acriomioclavicular joint motion.
Acromioclavicular joint injury
