MEDICAL GRADE COTTON AND EVANS OSTEOTOMY WEDGES
A medical grade thermoplastic or polymer material wedge used for various deformity corrections in foot and/or ankle bone surgery of adults and/or children. The medical grade thermoplastic or polymer material wedges can be provided in various predetermined (e.g., prefabricated) sizes for selection therefrom depending on the anatomy and/or desired correction of the deformity when performing an Evans or Cotton corrective osteotomy procedure.
1 . An osteotomy implant for surgical foot and/or ankle osteotomy bone corrections, the osteotomy implant comprising:
a first end;
a second end opposite the first end, the first end being thicker than the second end in a side view;
a threaded hole at the first end, the threaded hole being threaded for attachment of an insertion tool;
an opening at the second end, the opening extending toward the first end in a plan view;
the osteotomy implant being composed of one or more medical-grade materials, the one or more medical-grade materials being radiolucent and/or osteoconductive; and
the osteotomy implant being adapted to hold a bone correction achieved by an osteotomy cut.
2 . The osteotomy implant of claim 1 ,
wherein the one or more medical-grade materials are osteoconductive; and
wherein the osteotomy implant comprises a surface adapted to promote bone growth when the osteotomy implant is implanted to hold the bone correction achieved by the osteotomy cut.
3 . The osteotomy implant of claim 2 , wherein the opening has a first width in the plan view at the second end and a second width in the plan view at a middle portion of the osteotomy implant, the second width being wider than the first width.
4 . The osteotomy implant of claim 3 , wherein a portion of the opening is semi-circular in the plan view at the middle portion of the osteotomy implant, the second width being a diameter of the semicircular portion of the opening.
5 . The osteotomy implant of claim 4 , further comprising a surface that is semicircular in the plan view, the semicircular surface forming at least a portion of the semicircular portion of the opening.
6 . The osteotomy implant of claim 5 , further comprising a member coupled to the semicircular surface and extending across the semi-circular opening in the plan view.
7 . The osteotomy implant of claim 1 , wherein the one or more medical-grade materials comprises polyetheretherketone (PEEK).
8 . The osteotomy implant of claim 1 , wherein the one or more medical-grade materials comprises polyetherketoneketone (PEKK).
9 . The osteotomy implant of claim 1 , wherein the one or more medical-grade materials comprises carbon fiber and polyetherketoneketone (PEKK).
10 . The osteotomy implant of claim 1 , wherein the osteotomy cut is a Cotton osteotomy.
11 . The osteotomy implant of claim 1 , wherein the osteotomy cut is an Evans osteotomy.
12 . The osteotomy implant of claim 1 , wherein the osteotomy implant is a prefabricated medical grade thermoplastic and/or polymer osteotomy wedge adapted to be implanted during surgical foot and/or ankle Cotton and/or Evans osteotomy bone corrections to stabilize and maintain flatfoot correction deformity procedures.
13 . A method comprising:
making an osteotomy cut of a bone of a patient to achieve a correction;
selecting a trial wedge based on a characteristic of the cut, the patient, and/or a desired correction;
inserting the trial wedge into the cut;
determining whether an actual correction achieved with the trial wedge is acceptable;
selecting, when the actual correction achieved with the trial wedge is acceptable, a prefabricated osteotomy wedge implant based on a characteristic of the accepted trial wedge;
inserting the selected prefabricated osteotomy wedge implant into the cut to maintain the achieved bone correction;
the selected prefabricated osteotomy wedge implant comprising:
a first end;
a second end opposite the first end;
an opening at the second end, the opening extending toward the first end in plan view;
the selected prefabricated osteotomy wedge implant being composed of one or more medical-grade materials, the one or more medical-grade materials being radiolucent and/or osteoconductive; and
the selected prefabricated osteotomy wedge implant being adapted to maintain the bone correction achieved by the osteotomy cut.
14 . The method of claim 13 ,
wherein the one or more medical-grade materials are osteoconductive; and
wherein the osteotomy wedge implant comprises a surface adapted to promote bone growth when the osteotomy wedge implant is inserted to maintain the bone correction achieved by the osteotomy cut.
15 . The method of claim 14 , wherein the opening has a first width in a plan view at the second end and a second width in the plan view at a middle portion of the osteotomy implant, the second width being wider than the first width.
16 . The method of claim 15 , wherein a portion of the opening is semi-circular in the plan view at the middle portion of the osteotomy implant, the second width being a diameter of the semicircular portion of the opening.
17 . The method of claim 16 ,
wherein the selected prefabricated osteotomy wedge implant further comprising a surface that is semicircular in the plan view, the semicircular surface forming at least a portion of the semicircular portion of the opening, and
wherein the selected prefabricated osteotomy wedge implant further comprises a member coupled to the semicircular surface and extending across the semi-circular opening in the plan view.
18 . The method of claim 13 , wherein the one or more medical-grade materials comprises one or more of:
polyetheretherketone (PEEK), polyetherketoneketone (PEKK), and/or carbon fiber PEKK.
19 . The method of claim 13 , wherein the making an osteotomy cut of a bone to achieve a correction comprises making a Cotton osteotomy or an Evans osteotomy.
20 . An osteotomy wedge kit for surgical foot and/or ankle osteotomy bone corrections, the osteotomy wedge kit comprising:
a plurality of osteotomy implants of two or more types/sizes;
a plurality of trial wedges, each of the trial wedges being configured to represent a respective one of the types/sizes of the implants; and
each osteotomy implant comprising:
a first end;
a second end opposite the first end;
an opening at the second end, the opening extending toward the first end in a plan view;
the osteotomy implant being composed of one or more medical-grade materials, the one or more medical-grade materials being radiolucent and/or osteoconductive; and
the osteotomy implant being adapted to hold a bone correction achieved by an osteotomy cut.