Patent ID: 7914539

Claim:
A fixation assembly for securing tissue to a bone or repairing tissue comprising: a fixation device including: an anchor having a hollow body and a plurality of inner longitudinal ribs defining a longitudinal passage of cruciate shape, the body comprising a cylindrical portion having external threads and a tapered tip portion, the cylindrical portion comprising a plurality of thin-walled window covers, each window cover occupying only a portion of the hollow body between adjacent threads and between adjacent ribs, such that after implantation the window covers are resorbed first relative to other portions of the cylindrical portion for defining a plurality of apertures in the cylindrical portion; and a plug configured to be received in the passage, the plug having an outer shape complementary to and mating with the cruciate shape of the passage; and an inserter assembly including: an anchor sleeve configured for engaging a proximal end of the anchor, wherein the anchor sleeve is sized to receive the plug for insertion into the longitudinal passage of the anchor; and a driver configured for engaging the longitudinal passage of the anchor through the anchor sleeve.