The invention describes a bone anchor 76 comprising a head region 94 and supporting legs 78 and a method for soft tissue-bone grafting using the said bone anchor 76. A hole 84 is drilled through cortical bone 82 forming a socket 70 in a cancellous bone 90, and the bone anchor 76 is inserted therein thereby...http://www.google.fr/patents/US6652560?utm_source=gb-gplus-shareBrevet US6652560 - Bone anchor