Patent ID: 7435262

Claim:
An interbody spinal implant made of cortical bone for insertion at least in part into an implantation space formed across the height of a disc space between adjacent vertebral bodies of a human spine, the vertebral bodies having an anterior aspect and a posterior aspect and a depth therebetween, said implant comprising: a leading end for insertion first into the disc space, a trailing end opposite said leading end, and opposite sides between said leading end and said trailing end; opposed upper and lower portions between said leading and trailing ends adapted to be placed at least in part within and across the height of the disc space to contact and support the adjacent vertebral bodies, said upper and lower portions being non-arcuate along at least a portion of the length of said implant; and a length from said leading end to said trailing end and a maximum width transverse to the length and across said opposite sides, said maximum width of said implant ranging from about 30 millimeters to about 38 millimeters, said leading end forming one half of a circle from one of said opposite sides to the other of said opposite sides, the circle having a diameter equal to the maximum width of said implant, the length of said implant being greater than the maximum width of said implant.