| 摘要 |
<p>An apparatus for facilitating fusion of adjacent bony structures includes an implant body dimensioned for positioning between adjacent bone structures to maintain the bone structures in desired spaced relation during interbody fusion. The implant body defines a longitudinal axis and has an outer wall extending along the longitudinal axis. The outer wall includes a plurality of annular serrated portions spaced along the longitudinal axis. The annular serrated portions are dimensioned and configured to engage the adjacent bone structures to facilitate retention of the implant member therewithin. The implant member further include at least one concave surface at least partially extending along the longitudinal axis, whereby the transverse cross-sectional dimension along a first transverse axis inclusive of the concave surface is less than the transverse cross-sectional dimension along a second transverse axis. The concave surface extends substantially along the length of the implant member. Preferably, the implant body includes a pair of diametrically opposed concave wall surfaces.</p> |
