Paragraph Number

98

In the illustrative example of FIGS. 1-12, the anchor body 102 has a first exterior dimension 128, perpendicular to the longitudinal axis, over a first portion 130 of its exterior length 132; a second exterior dimension 134, perpendicular to the longitudinal axis, greater than the first dimension 128, over a second portion 136 of its exterior length 132; and a third exterior dimension 138, perpendicular to the longitudinal axis, greater than the second dimension 134, over a third portion 140 of its exterior length 132. For example, the first dimension 128 may be less than or equal to a radial dimension of a bone hole to ease alignment and initial insertion of the anchor body 102 into the bone hole. The second dimension 134 may be larger than the radial dimension of the bone hole to create a press fit of the second portion 136 within the bone hole to resist removal of the anchor body 102 from the bone hole. The third dimension 138 may create an even tighter press fit in the bone hole. The third portion 140 will require the greatest insertion force. By making the length of the third portion 140 relatively short, the total effort to insert the anchor body 102 will be lessened and the maximum insertion force will only be required to insert the relatively short third portion. The second and third portions 136, 140 may also have ribbed surfaces to further resist removal of the anchor body 102 from the bone hole. The spacing, or pitch, of the ribs may vary. For example, the second portion 136 may have ribs with relatively wider spacing for positioning in a relatively wide band of cancellous bone and the third portion 140 may have ribs with relatively narrower spacing for positioning in a relatively narrow band of cortical bone.

Added by DJM 9 2021