Patent ID: 7063701

Claim:
A screw formed of cortical bone for use in the human body with an implant having a screw hole for receiving at least a portion of a screw therethrough, said screw comprising: a leading end, a trailing end apposite said leading end, and a shaft therebetween, said shaft having a mid-longitudinal axis and a length; a thread extending from said shaft along at least a portion of its length, said thread having an outer diameter dimensioned to pass through the screw hole in the implant; said trailing end being configured to cooperatively engage at least a portion of the screw hole of the implant so as to prevent said screw from linear motion along the mid-longitudinal axis of said shaft in a direction opposite to the direction of insertion when said screw is threaded through the screw hole to attach the implant to a bone portion of the human body; and said screw being formed substantially of cortical bone of a single cortical thickness.