Customized patient-specific instrumentation for use in orthopaedic surgical procedures
View Patent ↗A number of orthopaedic surgical instruments are also disclosed. A method, apparatus, and system for fabricating such instruments are also disclosed.
1. A customized patient-specific orthopaedic instrument, comprising:
a customized patient-specific cutting block having a body that comprises (i) a bone-facing surface having a customized patient-specific negative contour configured to receive a portion of a bone of a patient that has a corresponding contour, (ii) an outer surface opposite the bone-facing surface, (iii) a first cutting guide corresponding to a predetermined customized patient-specific cutting plane, the first cutting guide including a slot, and (iv) a second cutting guide that is parallel to the first cutting guide and spaced apart from the first cutting guide by a predetermined distance, the second cutting guide including a slot, and
a breakaway tab covering the second cutting guide and removably coupled to the second cutting guide by a perforated sheet,
wherein the customized patient-specific negative contour of the bone-facing surface includes a unique plurality of depressions and ridges that match a corresponding plurality of ridges and depressions of the corresponding contour of the portion of the bone of the patient.
2. The orthopaedic instrument of claim 1 , wherein the second cutting guide is usable to remove a greater amount of the bone of the patient relative to the first cutting guide when the customized patient-specific cutting block is secured to the bone of the patient.
3. The orthopaedic instrument of claim 1 , wherein:
the body of the customized patient-specific cutting block further comprises a third cutting guide,
the third cutting guide is parallel to the first cutting guide and spaced apart from the first cutting guide by the predetermined distance, and
the first cutting guide is positioned between the second cutting guide and the third cutting guide.
4. The orthopaedic instrument of claim 3 , wherein:
the second cutting guide is usable to remove a greater amount of the bone of the patient relative to the first cutting guide when the customized patient-specific cutting block is secured to the bone of the patient, and
the third cutting guide is usable to remove a lesser amount of the bone of the patient relative to the first cutting guide when the customized patient-specific cutting block is secured to the bone of the patient.
5. The orthopaedic instrument of claim 1 , wherein:
the body of the customized patient-specific cutting block further comprises at least one guide pin hole defined therein, and
the at least one guide pin hole extends from the outer surface to the bone-facing surface.
6. The orthopaedic instrument of claim 1 , wherein the customized patient-specific cutting block comprises a customized patient-specific femoral cutting block.
7. The orthopaedic instrument of claim 1 , wherein the customized patient-specific cutting block comprises a customized patient-specific tibial cutting block.
8. The orthopaedic instrument of claim 1 , wherein the breakaway tab is transparent.
9. The orthopaedic instrument of claim 1 , wherein (i) the body of the customized patient-specific cutting block further comprises a third cutting guide, (ii) the third cutting guide is parallel to the first cutting guide and spaced apart from the first cutting guide by the predetermined distance, and (iii) the first cutting guide is positioned between the second cutting guide and the third cutting guide, further comprising:
a second transparent breakaway tab covering the third cutting guide.