Vertebral body and disc space replacement devices

A device positionable in a spinal column between endplates of first and second vertebrae, comprising:

• a first member including a body extending from a first end surface for engaging an endplate of the first vertebra to an opposite second end surface, said body of said first member extending around said at least one chamber and said at least one chamber opens at least at said second end surface;
• and
• a second member including a body extending along a longitudinal axis between a first end surface and an opposite second end surface, said second end surface of said first member positioned in contact with said first end surface of said second member, wherein said second member includes at least one engaging member extending along said longitudinal axis away from said first end surface of said second member and at least two extensions extending along said longitudinal axis away from said first end surface of said second member, said at least two extensions being positioned in said chamber and contacting said body of said first member at opposite sides of said body to resist movement of said first member relative to said second member transversely to said longitudinal axis and said at least one engaging member being positioned in said chamber and in contact with said body of said first member to resist displacement of said first member away from said second member along said longitudinal axis.

A system positionable in a spinal column between endplates of first and second vertebrae, comprising:

• a first device extending along a first longitudinal axis, the first device comprising:
• a first body extending from a first end surface for engaging an endplate of the first vertebra to an opposite second end surface, said first body including opposite elongated sidewalls and opposite endwalls extending between said opposite sidewalls, said opposite sidewalls and said opposite end walls extending around at least one chamber and said at least one chamber opens at said first and second end surfaces;
• a second body extending between a first end surface and an opposite second end surface of said second body, said second body including opposite elongated sidewalls and opposite endwalls extending between said opposite sidewalls of said second body, said opposite sidewalls and said opposite end walls extending around at least one chamber of said second body and said at least one chamber opens at said first and second end surfaces of said second body, said second end surface of said first body positioned in contact with said first end surface of said second body;
• a second device extending along a second longitudinal axis generally parallel to said first longitudinal axis, said second device comprising:
• a third body extending from a first end surface for engaging an endplate of the first vertebra to an opposite second end surface of said third body, said third body including opposite elongated sidewalls and opposite endwalls extending between said opposite sidewalls of said third body, said opposite sidewalls and said opposite end walls extending around at least one chamber of said third body and said at least one chamber opens at said first and second end surfaces of said third body;
• a fourth body extending between a first end surface and an opposite second end surface of said fourth body, said fourth body including opposite elongated sidewalls and opposite endwalls extending between said opposite sidewalls of said fourth body, said opposite sidewalls and said opposite end walls extending around at least one chamber and said at least one chamber opens at said first and second end surfaces of said fourth body, said second end surface of said third body positioned in contact with said first end surface of said fourth body;
• and
• a connecting system that extends between and engages said first device and said second device to one another with said first and second devices in side-by-side relation to one another.