Surgical bone screw method and apparatus
A bone screw cutting system can include a cutting assembly having a plurality of blades. The system can further include a position adjustment assembly coupled to the cutting assembly and configured to receive a bone screw blank and position the bone screw blank relative to the cutting assembly. The cutting assembly is configured to cut a bone screw blank received by the position adjustment assembly and to form a self-tapping end portion at a cut end of a resulting cut bone screw.
1 . An orthopedic implant kit, comprising:
a base;
a plurality of bone screws received on the base, wherein the plurality of bone screws comprises a plurality of cortical locking bone screws which each have threads in a head of the cortical locking bone screw, and a plurality of cortical bone screws which each are without threads in a head of the cortical bone screw, wherein one or more of the plurality of bone screws and the base are sterilized, wherein the plurality of cortical locking bone screws consists of exactly four cortical locking bone screws, and wherein the plurality of cortical bone screws consists of exactly two cortical bone screws; and
a tibial plateau leveling osteotomy (TPLO) plate secured on the base, the TPLO plate comprising an elongated body comprising a first portion and a second portion, wherein the elongated body of the TPLO plate is curved in an X-Y plane such that the first portion is offset from the second portion in a direction along the X-axis, wherein a straight line that extends in a direction of a length dimension of the second portion extends in a direction of the Y-axis, wherein the length dimension of the second portion is longer than that of the first portion, wherein the second portion comprises two or more screw holes spaced apart along the second portion, wherein the first portion comprises a plurality of screw holes arranged in a triangular pattern, and wherein each of the plurality of screw holes of the first portion is offset from the straight line along the X-axis in the same direction such that all of the screw holes of the first portion are on the same side of the straight line as one another.
2 . The orthopedic implant kit of claim 1 , wherein each bone screw comprises a head and a threaded shaft having specified major and minor diameters, and a specified thread pitch.
3 . The orthopedic implant kit of claim 1 , wherein the plurality of screw holes in the first portion are spaced away from the two or more screw holes in the second portion by a region of the elongated body without holes.
4 . The orthopedic implant kit of claim 1 , wherein the elongated body comprises an outer edge having a convex curve that extends along each of and from the first portion to the second portion and an inner edge having a concave curve that extends along each of and from the first portion to the second portion, wherein the outer edge and inner edge are opposite one another across the width of the elongated body.
5 . The orthopedic implant kit of claim 1 , wherein the first portion is offset from the second portion in a direction of a Z-axis that is perpendicular to each of the X-axis and the Y-axis.
6 . The orthopedic implant kit of claim 1 , wherein the base is a sterilizable cardboard, paperboard, or cardstock base.
7 . The orthopedic implant kit of claim 1 , wherein the base comprises a plurality of tabs, each tab comprising an opening configured to receive a bone screw of the plurality of bone screws.
8 . The orthopedic implant kit of claim 1 , wherein the plurality of cortical locking bone screws includes cortical locking bone screws of different lengths, and wherein the plurality of cortical bone screws includes cortical bone screws of different lengths.
9 . An assembly comprising the orthopedic implant kit of claim 1 , and further comprising a package, wherein the orthopedic implant kit is sterilized and packaged inside the package.
10 . The assembly of claim 9 , wherein the package is a polymer pouch.
11 . An orthopedic implant kit, comprising:
a base;
a plurality of bone screws received on the base, wherein the plurality of bone screws comprises a plurality of locking screws and a plurality of cortical screws, wherein the plurality of locking screws consists of exactly four locking screws, and wherein the plurality of cortical screws consists of exactly two cortical screws; and
an orthopedic implant secured on the base, wherein the implant is a tibial plateau leveling osteotomy (TPLO) plate comprising an elongated body comprising a first portion and a second portion, wherein the elongated body of the TPLO plate is curved in an X-Y plane such that the first portion is offset from the second portion in a direction along the X-axis, wherein a straight line that extends in a direction of a length dimension of the second portion extends in a direction of the Y-axis, wherein the length dimension of the second portion is longer than that of the first portion, wherein the second portion comprises three screw holes spaced apart along the second portion, and wherein the first portion comprises three screw holes arranged in a triangular pattern, and wherein each of the three screw holes of the first portion is offset from the straight line along the X-axis in the same direction such that all three screw holes of the first portion are on the same side of the straight line as one another,
wherein the orthopedic implant kit is sterilized, and wherein each locking screw of the plurality of locking screws has threads in a head of the locking screw that are configured to engage corresponding threads in the orthopedic implant.
12 . The orthopedic implant kit of claim 11 , wherein the plurality of locking screws include locking screws having different lengths.
13 . The orthopedic implant kit of claim 11 , wherein the elongated body comprises an outer edge having a convex curve that extends from a terminal end of the first portion to a terminal end of the second portion and an inner edge having a concave curve that extends from the terminal end of the first portion to the terminal end of the second portion, wherein the outer edge and inner edge are opposite one another across the width of the elongated body.
14 . An assembly comprising the orthopedic implant kit of claim 11 , and further comprising a package, wherein the orthopedic implant kit is packaged inside the package.
15 . The assembly of claim 14 , wherein the package containing the orthopedic implant kit, and the orthopedic implant kit, are sterilized.
16 . The assembly of claim 14 , wherein the package is a polymer pouch.
17 . The orthopedic implant kit of claim 11 , wherein each cortical screw does not have threads in a head of the cortical screw.