Customized patient-specific tibial cutting blocks

摘要

A number of orthopaedic surgical instruments are disclosed. A method, apparatus, and system for fabricating such instruments are also disclosed.

主权项

1. A customized patient-specific tibial cutting block, comprising:
a body having a bone-facing surface that has a customized patient-specific negative contour configured to receive a portion of an anterior side of a patient's tibia that has a corresponding positive contour, the customized patient-specific negative contour of the body comprises a first prominence positioned to contact the portion of the anterior side of the patient's tibia when the portion of the anterior side of the patient's tibia is received in the customized patient-specific negative contour of the body, a first tab extending posteriorly from the body, the first tab having a bone-facing surface that has a customized patient-specific negative contour configured to receive a first portion of the proximal side of the patient's tibia that has a corresponding positive contour, the customized patient-specific negative contour of the first tab comprises a customized bone-engaging surface and a second prominence positioned to contact the first portion of the proximal side of the patient's tibia when the first portion of the proximal side of the patient's tibia is received in the customized patient-specific negative contour of the first tab, and a second tab extending posteriorly from the body, the second tab having a bone-facing surface that has a customized patient-specific negative contour configured to receive a second portion of the proximal side of the patient's tibia that has a corresponding positive contour, the customized patient-specific negative contour of the second tab comprises a customized bone-engaging surface and a third prominence positioned to contact the second portion of the proximal side of the patient's tibia when the second portion of the proximal side of the patient's tibia is received in the customized patient-specific negative contour of the second tab, wherein the first prominence is located anteriorly and inferiorly to both the second prominence and the third prominence, wherein the second prominence further comprises one or more protrusions extending from the customized bone-engaging surface of the first tab such that each protrusion is individually customized to match any deformations on articular surfaces of the proximal side of the patient's tibia, and wherein the third prominence further comprises one or more protrusions extending from the customized bone-engaging surface of the second tab such that each protrusion is individually customized to match any deformations on articular surfaces of the proximal side of the patient's tibia.