An innovative bone anchor and methods for securing soft tissue, such as tendons, to bone are described herein Such devices and methods permit a suture attachment that lies beneath the cortical bone surface and does not require tying of knots in the suture....http://www.google.de/patents/US8133258?utm_source=gb-gplus-sharePatent US8133258 - Method and apparatus for attaching connective tissues to bone using a knotless suture anchoring device