#$%^&*AU2013203295B220160714.pdf#####H: AMTntenvoven NRPortbl DCC AMT5059922_I.DOC-9/04/2013 ABSTRACT The present invention provides compositions and methods for attaching tendon to bone. The present invention provides compositions and methods for treating rotator cuff injuries. In one embodiment, a method for treating rotator cuff injuries comprises providing a composition comprising PDGF disposed in a biocompatible matrix and applying the composition to at least one site of tendon reattachment on the humeral head.