Use of an allograft bone button for rotator cuff repair.

ABSTRACT

Bone button anchors constructed from allograft bone were investigated as an alternative for rotator cuff repair. Bone button anchors were used in 59 consecutive procedures after mechanical pullout strength and cyclical loading bench testing. Sequential radiographs demonstrated that the anchors locked in cancellous bone and provided consistent fixation with no loosening or lysis in 1 year of clinical follow-up. Mechanical testing demonstrated mean, pullout strength of 160.2 N (36 lbs), and the anchors did not migrate when cyclically loaded. Clinical results showed an allograft anchor is viable for rotator cuff tendon repair.