Fenestrated implant

1 . An implant for bone fixation, comprising:

an elongate body having a longitudinal axis and a rectilinear cross section transverse to the longitudinal axis, a first face, a second face, and a third face, each extending longitudinally along the elongate body, wherein each of the first face, second face, and third face form an apex with an adjacent face, wherein the second face extends between an apex with the first face and an apex with the third face,

wherein a distal portion of the elongate body that is configured to be implanted in a sacrum includes a plurality of fenestrations on each face, and a proximal portion of the elongate body that is proximal relative to the distal portion of the elongate body and that is configured to be implanted in an ilium is free from fenestrations,

wherein the implant has a bending strength or a shear strength of 0.5 to 0.9 relative to a reference implant that is cannulated but otherwise solid and which has a bending strength of 1.00 and a shear strength of 1.00.

2 . The implant of claim 1 , wherein each apex is chamfered at its distal end to provide three sloping distal shoulders.

3 . The implant of claim 1 , wherein the plurality of fenestrations on each face are arranged in a staggered pattern.

4 . The implant of claim 3 , wherein the plurality of fenestrations on each face comprises a plurality of rows of fenestrations, and wherein on each face the fenestrations in a first row are staggered from the fenestrations in a second row.

5 . The implant of claim 1 , wherein the elongate body has a triangular cross section transverse to the longitudinal axis.

6 . The implant of claim 1 , wherein the plurality of fenestrations have circular shapes.

7 . The implant of claim 1 , wherein the plurality of fenestrations have oval shapes.

8 . The implant of claim 1 , further comprising a fourth face extending between an apex with the first face and an apex with the third face.