Orthopedic implant surface configuration with a projection having a back cut

An orthopedic implant for contact with bone, including adjacent bones and bone portions, of a human skeleton, said implant comprising:

• a leading end, an opposite trailing end, a mid-longitudinal axis passing through said leading and trailing ends, and right and left sides between said leading and trailing ends, said right and left sides being spaced apart on opposite sides of the mid-longitudinal axis and;
• an exterior surface between said leading and trailing ends and said right and left sides, said exterior surface adapted for placement in engagement with the bone;
• and
• a plurality of surface projections formed on said exterior surface of said implant, each of said surface projections having a plurality of facets, each of said facets having a perimeter defining each facet, at least a first and a second of said surface projections each having at least a first facet and at least a second facet opposite said first facet, each of said first and second facets having a length and a slope, the length of said first facet being longer than the length of said second facet, the slope of said second facet being steeper than the slope of said first facet, said second facet including a perimeter having at least a first and a second portion arranged to form an apex having an included angle greater than 90 degrees between said first and second portions of the perimeter.

An orthopedic implant for contact with bone, including adjacent bones and bone portions, of a human skeleton, said implant comprising:

• a leading end for introduction of said orthopedic implant into the bone, an opposite trailing end, spaced apart sides therebetween, and a mid-longitudinal axis passing through said leading and trailing ends;
• an exterior surface between said leading and trailing ends and said spaced apart sides, said exterior surface adapted for placement in engagement with the bone;
• and
• a plurality of surface projections formed on said exterior surface of said implant, at least a first and a second of said surface projections each having at least one forward facing facet directed at least in part toward said leading end and at least one rearward facet directed at least in part toward said trailing end, each of said forward facet and rearward facet having a length and a slope, the length of said forward facet being longer than the length of said rearward facet, the slope of said rearward facet being steeper than the slope of said forward facet, said first and second surface projections each having a base and an included angle between said rearward facet and the base greater than 90 degrees relative to said exterior surface of said implant, said surface projections having opposed side facets directed generally toward said sides of said implant, said side facets being located between said forward facet and said rearward facet of said surface projections, said side facets converging toward each other in a direction away from the base of said first and second projections.

An orthopedic implant for contact with bone, including adjacent bones and bone portions, of a human skeleton, said implant comprising:

• a leading end for introduction of said orthopedic implant into the bone, an opposite trailing end, spaced apart sides therebetween, and a mid-longitudinal axis passing through said leading and trailing ends;
• an exterior surface between said leading and trailing ends and said spaced apart sides, said exterior surface adapted for placement in engagement with the bone;
• and
• a plurality of surface projections formed on said exterior surface of said implant, each of said surface projections having a forward facet directed at least in part toward said leading end and a rearward facet directed at least in part toward said trailing end, said rearward facet including a perimeter having at least a first and a second portion arranged to form an apex having an included angle greater than 90 degrees between said first and second portions.

An interbody orthopedic implant for contact with bone including adjacent bones and bone portions, of a human skeleton, said implant comprising:

• a leading end for introduction of said orthopedic implant into the bone, an opposite trailing end, spaced apart sides therebetween, and a mid-longitudinal axis passing through said leading and trailing ends;
• an exterior surface between said leading and trailing ends and said spaced apart sides, said exterior surface adapted for placement in engagement with the bone;
• and
• a plurality of surface projections formed on said exterior surface of said implant, at least a first and a second of said surface projections each having at least one forward facing facet directed at least in part toward said leading end and at least one rearward facet directed at least in part toward said trailing end, each of said forward facet and rearward facet having a length and a slope, the length of said forward facet being longer than the length of said rearward facet, the slope of said rearward facet being steeper than the slope of said forward facet, said first and second surface projections each forming a base having a perimeter and a portion above the base, said base having a width and a length greater than width, the length extending along the mid-longitudinal axis of said implant, the width being transverse to the length, said portion above the base of said first and second surface projections extending outside of the perimeter of the base of a respective one of said first and second surface projections, said first and second surface projections each having opposed side facets directed generally toward said spaced apart sides of said implant, respectively, said side facets being located between said forward facet and said rearward facet of each of said first and second surface projections, said side facets converging toward each other in a direction away from said exterior surface of said implant.