Patent ID: 7794484

Claim:
A method for attaching soft tissue to bone comprising: forming a bone bore through an outer surface of a bone and into the bone; placing the soft tissue on the outer surface of the bone and above the bone bore; inserting a bone-anchoring member of an expandable fixation device into the bone bore, the bone-anchoring member having a body, a head, a first longitudinal bore through the body and the head, and a first radial aperture communicating with the first longitudinal bore; engaging the head to the soft tissue; inserting an expansion insert of the fixation device into the first longitudinal bore of the bone-anchoring member, the expansion insert defining a second longitudinal bore and a second radial aperture communicating with the second longitudinal bore; aligning the first radial aperture with the second radial aperture; and delivering a separate biologic material through the first and second radial apertures of the fixation device between the soft tissue and the outer surface of the bone after placing the soft tissue on the outer surface of the bone and above the bone bore.