Fig. (4) Illustrations of the surgical steps in the Tension-slide technique of proximal biceps tendodesis using an EndoButton reproducing anatomical length-tension relationship A, Passing the guide wire through distal bicipital groove (DBG) B, Reaming the anterior cortex and the intramedullary canal over the guide wire using a calibrated cannulated drill. C, Drilling the posterior cortex over the guide wire using an EndoButton drill. D, Passing suture thread limbs through the 4-holed EndoButton. E, Inserting a threaded EndoButton through the bone tunnel. F, Tightening the suture threads and flushing the EndoButton on the posterior cortex and tying the knot under tension after passing the suture ends through the proximal end of the long head biceps tendon, once it is shuttled through the bone tunnel to reinforce the fixation.