Fig. 2

Illustration of a modified single-endobutton technique combined with the nice knot for treatment of Rockwood type IIIACD. a Rockwood type III or V acromioclavicular joint dislocation. b The two strands of Endobutton suture are folded into four strands and introduced through the medial hole of the clavicle, around the rostral process and leading out at the lateral hole of the clavicle, respectively out of the hole of Endobutton. The acromioclavicular joint is repositioned and fixed on the Endobutton using the nice knot and gradually tightened. c Illustration of a nice knot. d If the joint was repositioned, at least three single knots were added to the nice knot to strengthen the fixation