Bone screw implant for sacroiliac joint fusion

A bone screw implant for sacroiliac joint fusion, the bone screw implant comprising:

• a bone screw comprising:
• a shank defining a longitudinal axis and having a first end and a second end opposite the first end;
• a first engagement geometry extending circumferentially about the shank perpendicular to the longitudinal axis;
• and
• at least one cutting flute provided between the first end and the second end, wherein the at least one cutting flute is configured to gather and retain bone shavings;
• and
• a sleeve coupled with the bone screw, the sleeve comprising:
• a body portion having an external surface and a bore forming an internal surface;
• a second engagement geometry extending circumferentially about the bore and perpendicular to an axis of the bore,
• wherein the first engagement geometry and the second engagement geometry fix the sleeve longitudinally relative to the bone screw and allow the sleeve to rotate relative to the bone screw.

A bone screw implant for sacroiliac joint fusion, the bone screw implant comprising:

• a bone screw comprising:
• a shank having a first end and a second end opposite the first end, the shank defining a longitudinal axis extending between the first end and the second end;
• a first engagement geometry extending circumferentially about the shank perpendicular to the longitudinal axis;
• and
• at least one cutting flute provided between the first end and the second end, wherein the at least one cutting flute is configured to gather and retain bone shavings;
• and
• a sleeve coupled with the bone screw, the sleeve comprising:
• a body portion having an external surface and a bore forming an internal surface;
• a second engagement geometry extending circumferentially about the bore;
• wherein one of the first engagement geometry and the second engagement geometry is a groove, and the other of the first engagement geometry and the second engagement geometry is a projection;
• wherein engagement between the groove and the projection inhibit longitudinal movement of the sleeve relative to the bone screw and allow the sleeve to rotate relative to the bone screw.