Offset radius lordosis

A spinal implant for posterior or lateral placement between a first vertebral plate and a second vertebral plate of adjacent vertebrae, said implant comprising:

• an implant body wherein said implant body comprises:
• a length along a medial-lateral direction and a width along an anterior-posterior direction orthogonal to said medial-lateral direction, wherein said length being greater than said width of said implant body;
• a first bearing surface configured to abut the first vertebral plate,
• a second bearing surface configured to abut the second vertebral plate,
• said first bearing surface having a first curvature in said medial-lateral direction along said length of said body in a first plane of curvature defining a first radius about a first center of curvature, said first plane of curvature being perpendicular to said anterior-posterior direction, said first center of curvature being longitudinally offset at a first non-zero distance along said length away from a centroidal axis, wherein said first curvature extends in opposing directions from said first center of curvature in said medial-lateral direction along said length;
• said first bearing surface having a second curvature in said anterior-posterior direction along said width of said body in a second plane of curvature defining a second radius, said second plane of curvature being perpendicular to said medial-lateral direction;
• a first and second cavity open to at least said first bearing surface and said second bearing surface;
• and
• an intermediate member interposed between said first and said second cavity.

A spinal implant for placement within an intervertebral space between a first vertebra and an adjacent second vertebra, said implant comprising:

• an implant body having a first cross-section in a medial-lateral direction along said implant, and further comprising:
• a superior bearing surface configured to abut a first vertebra,
• an inferior bearing surface configured to abut a second vertebra,
• at least one of said superior bearing surface and said inferior bearing surface having a first curvature in said medial-lateral direction with a first radius about a first center of curvature, said first center of curvature being located in a first plane of curvature perpendicular to said medial-lateral direction, said first center of curvature being longitudinally offset at a non-zero distance along a length of said body away from a centroidal axis of said body in said first plane of curvature;
• said implant having a second cross-section in an anterior-posterior direction along said implant substantially orthogonal to said medial-lateral direction, said implant body comprising:
• at least one of said superior bearing surface and said inferior bearing surface having a second curvature in said anterior-posterior direction with a second radius;
• a first cavity configured to establish a communicative pathway through said implant, between the first vertebra and the second vertebra;
• a second cavity configured to establish a communicative pathway through said implant, between said first vertebra and the second vertebra;
• an intermediate member between said first and said second cavity;
• and
• an angled landing provided at the junction of said superior bearing surface or said inferior bearing surface and at one of opposing medial-lateral ends of said implant body.

A spinal implant for placement within an intervertebral space between a first vertebra and an adjacent second vertebra, comprising:

• an implant having a first end surface and a second end surface connected by first and second walls, and a first load bearing surface and a second load bearing surface;
• said first load bearing surface having a first curvature in a medial-lateral direction along a length of said implant with a longitudinal radius about a center of curvature, said center of curvature being located in a first plane of curvature perpendicular to said medial-lateral direction, said implant having a centroidal axis centered on said length of said implant and said first plane of curvature, wherein said center of curvature of said longitudinal radius is longitudinally offset from said centroidal axis at a first non-zero distance along a direction of said length;
• wherein said first curvature extends in opposing directions from said center of curvature of said longitudinal radius in said medial-lateral direction along said length of said implant;
• and
• wherein said first load bearing surface having a second curvature in an anterior-posterior direction along a width orthogonal to said medial-lateral direction with a transverse radius about a second center of curvature, said second center of curvature being located in a second plane of curvature perpendicular to said anterior-posterior direction, said implant having said centroidal axis centered on said width of said implant and said second plane of curvature, wherein said second center of curvature of said transverse radius is transversely offset from said centroidal axis at a second non-zero distance along a direction of said width.