Implant device for a tibial plateau leveling osteotomy

An implant device for a tibial plateau leveling osteotomy, comprising:

• an epiphyseal tibial plate section comprising at least two screw holes and a bone-contacting surface, each screw hole of the epiphyseal tibial plate section configured to accept a bone screw to secure the plate section to an epiphyseal tibial bone fragment;
• a metaphyseal tibial plate section comprising at least two screw holes and a bone-contacting surface, each screw hole of the metaphyseal tibial plate section configured to accept a bone screw to secure the plate section to a metaphyseal tibial bone fragment;
• and
• a ligament that joins the tibial plate sections and is configured to span a curvilinear tibial cut, wherein the curvilinear cut separates the epiphyseal and metaphyseal tibial fragments and has a shape with a distally inward orientation toward the metaphyseal tibial bone fragment,
• wherein each of the epiphyseal and metaphyseal tibial plate sections and the ligament comprises an implant grade alloy,
• wherein the epiphyseal tibial plate section comprises an epiphyseal tibial plate section length and width, the metaphyseal tibial plate section comprises a metaphyseal tibial plate section length and width, and each tibial plate section length is at least two times longer than the respective tibial plate section width,
• wherein the epiphyseal tibial plate section length is shorter than the metaphyseal tibial plate section length,
• wherein each of the tibial plate sections comprises a cut-adjacent curvilinear surface that is substantially normal to its bone-contacting surface, and
• further wherein each of the cut-adjacent curvilinear surfaces has a shape that substantially matches the shape and inward orientation of the curvilinear cut.

An implant device for a tibial plateau leveling osteotomy, consisting essentially of:

• an epiphyseal tibial plate section comprising at least two screw holes and a bone-contacting surface, each screw hole of the epiphyseal tibial plate section configured to accept a bone screw to secure the plate section to an epiphyseal tibial bone fragment;
• a metaphyseal tibial plate section comprising at least two screw holes and a bone-contacting surface, each screw hole of the metaphyseal tibial plate section configured to accept a bone screw to secure the plate section to a metaphyseal tibial bone fragment;
• and
• a ligament that joins the tibial plate sections and is configured to span a curvilinear tibial cut, wherein the curvilinear cut separates the epiphyseal and metaphyseal tibial fragments and has a shape with a distally inward orientation toward the metaphyseal tibial bone fragment,
• wherein each of the epiphyseal and metaphyseal tibial plate sections and the ligament comprises an implant grade alloy,
• wherein the epiphyseal tibial plate section comprises an epiphyseal tibial plate section length and width, the metaphyseal tibial plate section comprises a metaphyseal tibial plate section length and width, and each tibial plate section length is at least two times longer than the respective tibial plate section width,
• wherein at least one screw hole of the epiphyseal tibial plate section is devoid of threading and comprises an unbeveled region, the unbeveled region comprising 90° or less of the total circumference of the at least one screw hole,
• wherein each of the tibial plate sections comprises a cut-adjacent curvilinear surface that is substantially normal to its bone-contacting surface, and
• further wherein each of the cut-adjacent curvilinear surfaces has a shape that substantially matches the shape and inward orientation of the curvilinear cut.