Two piece cross-pin graft fixation

A graft retaining system for retaining a graft in a bone tunnel having a length, a longitudinal axis, an entrance aperture and a closed end, the graft retaining system comprising:

• a graft block having a proximal end, a distal end, and a longitudinal axis extending therebetween, said block being sized and adapted to fit within said bone tunnel with its proximal end closer to said entrance aperture and its distal end closer to said closed end;
• tunnel attachment means for attaching said graft block adjacent said bone tunnel at a predetermined point along the length of said tunnel, said tunnel attachment means being situated transverse to the axis of said bone tunnel, said tunnel attachment means being located proximally of said distal end of said graft block;
• and
• graft attachment means for connecting said graft to said graft block at a position distal to said tunnel attachment means, the graft attachment means producing, in use when operatively attached to said graft, a proximally directed force to compress that portion of said graft block between said graft attachment means and said tunnel attachment means.

An implantable graft retaining system for retaining a graft in a bone tunnel having a length, an entrance aperture and a closed end, the graft retaining system comprising:

• a graft block implantable within said bone tunnel having a proximal end, a distal end, and a longitudinal axis extending therebetween, said graft block being sized and adapted to fit within said bone tunnel with its proximal end closer to said entrance aperture and its distal end closer to said closed end;
• a transverse pin intraoperatively insertable through said graft block, proximally of said distal end of said graft block, and into bone surrounding the graft block to attach said graft block within said bone tunnel at a predetermined point along said length of said tunnel, the transverse pin blocking withdrawal of the graft block from said bone tunnel;
• and
• a flexible loop mounted contiguously to said graft block at said distal end and distal to said transverse pin and extending from said graft block toward said entrance aperture, said flexible loop extending away from said proximal end of said graft block a predetermined amount sufficient to enable said loop to receive said graft between said loop and said proximal end to thereby attach said graft to said graft block.

A graft retaining system for retaining a graft in a bone tunnel having a length, an entrance aperture and a closed end, the graft retaining system comprising:

• a graft block having a proximal end, a distal end, and a longitudinal axis extending therebetween, said block being sized and adapted to fit within said bone tunnel with its proximal end closer to said entrance aperture and its distal end closer to said closed end;
• a transverse pin engageable with said graft block at a predetermined engagement portion on said graft block between its proximal and distal ends to attach said graft block within said bone tunnel at a predetermined point along said length of said tunnel;
• and
• at least one channel formed on said graft block distal of said predetermined engagement portion for receiving a portion of said graft such that proximally directed tension on said graft results in compressive loading of said graft block between said channel and said transverse pin.

A graft retaining system for retaining a graft in a bone tunnel having a length, an entrance aperture and a closed end, the graft retaining system comprising:

• a graft block having a body having a proximal end, a distal end, a longitudinal axis extending therebetween, and a pair of opposed longitudinal side surfaces, said block being sized and adapted to fit within said bone tunnel with its proximal end closer to said entrance aperture and its distal end closer to said closed end;
• a transverse pin engageable with said graft block at a predetermined engagement portion on said graft block between its proximal and distal ends to attach said graft block within said bone tunnel at a predetermined point along said length of said tunnel;
• a flexible loop adapted to engage both said graft block and said graft;
• and
• at least one channel formed on said graft block distal of said predetermined engagement portion for receiving a portion of said flexible loop, said flexible loop producing, as a result of a proximally directed tensile load, a compressive force on that portion of said graft block between said channel and said transverse pin.