Bone implants, systems, and methods

1 . A method of coupling a bone implant to a bone augment material comprising:

Coupling the bone augment material to a bone of a patient such that all of the bone augment material couples to the bone of the patient as a viscous fluid passed through a single aperture of a bone augment material inserter to couple with the bone of the patient;

after the bone augment material has been coupled to the bone of the patient, inserting a thread-forming tool into the bone augment material and forming a helical bone thread in the bone augment material, wherein the thread-forming tool is separate from the bone implant; and

coupling the bone implant to the helical bone thread formed in the bone augment material, wherein:

the bone implant comprises:

a shaft comprising:

a proximal end;

a distal end; and

a longitudinal axis; and

a helical thread disposed about the shaft along the longitudinal axis between the proximal end and the distal end of the shaft, wherein the helical thread comprises a concave undercut surface,

wherein the helical bone thread formed in the bone augment material comprises a convex surface shaped to engage the concave undercut surface of the bone implant to couple the bone implant to the bone augment material.

2 . The method of claim 1 , wherein the bone augment material comprises at least one of:

a bone cement;

a natural bone graft material; and

an artificial bone graft material.

3 . The method of claim 1 , wherein coupling the bone augment material to the bone of the patient further comprises:

injecting the bone augment material into a bone void formed within the bone of the patient, wherein the bone augment material comprises an injectable viscous fluid.

4 . The method of claim 3 , further comprising:

curing the bone augment material after injection to harden the bone augment material placed within the bone void.

5 . The method of claim 1 , wherein forming the helical bone thread in the bone augment material further comprises

tapping the helical bone thread into the bone augment material with a tapping tool.

6 . The method of claim 1 , wherein the concave undercut surface of the helical thread is angled towards one of the proximal end and the distal end of the shaft.

7 . A method of coupling a bone implant to a bone augment material comprising:

preparing a second interface surface of the bone augment material to receive a first interface surface of the bone implant, wherein:

the bone implant comprises:

a shaft comprising:

a proximal end;

a distal end; and

a longitudinal axis; and

a helical thread disposed about the shaft along the longitudinal axis between the proximal end and the distal end of the shaft, wherein the helical thread comprises a concave undercut surface on a first side of the helical thread defining at least a portion of the first interface surface of the bone implant and a convex undercut surface on a second side of the helical thread; and

the bone augment material comprises a convex surface shaped to receive the concave undercut surface of the helical thread, the convex surface defining at least a portion of the second interface surface of the bone augment material;

engaging the concave undercut surface of the helical thread with the convex surface of the bone augment material; and

coupling at least a portion of the first interface surface of the bone implant with the at least a portion of the second interface surface of the bone augment material to couple the bone implant to the bone augment material.

8 . The method of claim 7 , wherein preparing the second interface surface of the bone augment material to receive the first interface surface of the bone implant comprises:

coupling the bone augment material to a bone of a patient;

inserting the bone implant into the bone augment material; and

curing the bone augment material about the bone implant.

9 . The method of claim 7 , wherein preparing the second interface surface of the bone augment material to receive the first interface surface of the bone implant comprises:

coupling the bone augment material to a bone of a patient;

inserting a thread-forming instrument into the bone augment material;

curing the bone augment material about the thread-forming instrument; and

removing the thread-forming instrument from the bone augment material.

10 . The method of claim 7 , wherein preparing the second interface surface of the bone augment material to receive the first interface surface of the bone implant comprises:

molding the bone augment material around the bone implant.

11 . The method of claim 10 , wherein the bone augment material is molded around the bone implant in situ.

12 . The method of claim 7 , wherein:

the concave undercut surface on the first side of the helical thread comprises:

a first undercut surface; and

a second undercut surface; and

the convex undercut surface on the second side of the helical thread comprises:

a third undercut surface;

wherein:

the first undercut surface and the third undercut surface are angled toward one of the proximal end and the distal end of the shaft; and

the second undercut surface is angled toward the other one of the proximal end and the distal end of the shaft.

13 . A method of coupling a bone implant to a bone augment material comprising:

coupling the bone augment material within an untapped bone void formed within a bone of a patient;

rotating a thread-forming tool and moving the thread-forming tool distally into the bone augment material to form a helical bone thread in the bone augment material, wherein the thread-forming tool is separate from the bone implant; and

coupling the bone implant to the helical bone thread formed in the bone augment material, wherein:

the bone implant comprises:

a shaft comprising:

a proximal end;

a distal end; and

a longitudinal axis; and

a helical thread disposed about the shaft along the longitudinal axis between the proximal end and the distal end of the shaft, wherein the helical thread comprises a concave undercut surface,

wherein the helical bone thread formed in the bone augment material comprises a convex surface shaped to engage the concave undercut surface of the bone implant to couple the bone implant to the bone augment material.

14 . The method of claim 13 , wherein the bone augment material comprises at least one of:

a bone cement;

a natural bone graft material; and

an artificial bone graft material.

15 . The method of claim 13 , wherein coupling the bone augment material to the bone of the patient further comprises:

pressing the bone augment material into the untapped bone void formed within the bone of the patient.

16 . The method of claim 13 , wherein coupling the bone augment material to the bone of the patient further comprises:

injecting the bone augment material into the untapped bone void formed within the bone of the patient, wherein the bone augment material comprises an injectable viscous fluid.

17 . The method of claim 16 , further comprising:

curing the bone augment material after injection to harden the bone augment material placed within the untapped bone void.

18 . The method of claim 13 , wherein forming the helical bone thread in the bone augment material further comprises

tapping the helical bone thread into the bone augment material with a tapping tool.

19 . The method of claim 13 , wherein the concave undercut surface of the helical thread is angled towards one of the proximal end and the distal end of the shaft.