US 2026/0090812 A1Published application

Tibial alignment instrument and method of using the same in an orthopaedic surgical knee procedure

AssigneeDepuy Ireland Unlimited Company

InventorsKyle C. Helm, Thomas E. Wogoman, Daniel E. Lashure, Derek A. Shrack, George A. Bowman, Anees Ahamed Muhamed Farook

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Abstract

An orthopaedic surgical instrument includes an alignment guide having a pair of spacing guides secured thereto. The spacing guides are positioned between an installed femoral trial component and the articular surfaces of a patient's tibia. The alignment guide is secured to the spacing guides so as to align a tibial cutting block on the anterior surface of the patient's tibia based on desired extension gaps. A method of surgically preparing a patient's tibia is also disclosed.

Claims15

Dependent claims

An orthopaedic surgical instrument assembly for use in the surgical preparation a tibia of a patient during performance of an orthopaedic knee procedure, the orthopaedic surgical instrument assembly comprising:

a femoral trial component configured to be coupled to a surgically-prepared distal end of a femur of the patient, the femoral trial component having (i) an articular side comprising a medial condyle surface and a lateral condyle surface, (ii) a fixation side that is opposite the articular side and configured to engage the surgically-prepared distal end of the femur of the patient, (iii) a medial lug hole positioned at a dwell point of the medial condyle surface and extending from the articular side to the fixation side, and (iv) a lateral lug hole positioned at a dwell point of the lateral condyle surface and extending from the articular side to the fixation side,
a medial spacing guide, the medial spacing guide having (i) a medial paddle that includes a superior alignment surface and an opposite inferior surface, the superior alignment surface being sized and shaped to conform to the medial condyle surface of the femoral trial component, (ii) an elongated shaft extending anteriorly away from the medial paddle, the elongated shaft of the medial spacing guide being secured to the alignment guide, and (iii) an upwardly extending post formed in the superior alignment surface of the medial spacing guide, the upwardly extending post of the medial spacing guide being sized and shaped to be friction fit into the medial lug hole of the femoral trial component, and
a lateral spacing guide, the lateral spacing guide having (i) a lateral paddle that includes a superior alignment surface and an opposite inferior surface, the superior alignment surface being sized and shaped to conform to the lateral condyle surface of the femoral trial component, (ii) an elongated shaft extending anteriorly away from the lateral paddle, the elongated shaft of the medial spacing guide being secured to the alignment guide, and (iii) an upwardly extending post formed in the superior alignment surface of the lateral spacing guide, the upwardly extending post of the lateral spacing guide being sized and shaped to be friction fit into the lateral lug hole of the femoral trial component.

A method of surgically preparing a tibia of a patient during performance of an orthopaedic knee procedure, the method comprising:

installing a femoral trial component on a surgically-prepared distal end of a femur of the patient,
determining an amount of cartilage loss on an articular surface of the tibia of the patient,
selecting a spacing guide that includes a paddle having a thickness that corresponds to the determined amount of cartilage loss on the articular surface of the tibia of the patient from a plurality of spacing guides each of which has a paddle of differing thicknesses, and
inserting a post of the paddle of the selected spacing guide into a lug hole formed at a dwell point of a condyle surface of the installed femoral trial component so as to install the paddle of the selected spacing guide between the condyle surface of the installed femoral trial component and the articular surface of the tibia of the patient.

1 more element

A method of surgically preparing a tibia of a knee of a patient during performance of an orthopaedic knee procedure, the method comprising:

installing a femoral trial component on a surgically-prepared distal end of a femur of the patient,
determining, with the patient's knee positioned in extension, (i) a desired medial extension gap indicative of a distance between a medial condyle of the patient's femur and a medial plateau of the patient's tibia, and (ii) a desired lateral extension gap indicative of a distance between a lateral condyle of the patient's femur and a lateral plateau of the patient's tibia,
selecting a medial spacing guide that includes a paddle having a thickness that corresponds to the determined medial extension gap from a plurality of spacing guides each of which has a paddle of differing thicknesses,
selecting a lateral spacing guide that includes a paddle having a thickness that corresponds to the determined lateral extension gap from the plurality of spacing guides each of which has a paddle of differing thicknesses,
inserting (i) a post of the paddle of the selected medial spacing guide into a lug hole formed at a dwell point of a medial condyle surface of the installed femoral trial component, and (ii) a post of the paddle of the selected lateral spacing guide into a lug hole formed at a dwell point of a lateral condyle surface of the installed femoral trial component, and
installing (i) the paddle of the selected medial spacing guide between a medial condyle surface of the installed femoral trial component and the medial plateau of the tibia of the patient, and (ii) the paddle of the selected lateral spacing guide between a lateral condyle surface of the installed femoral trial component and the lateral tibial plateau of the tibia of the patient.

3 more elements

Dependencies are inferred from the claim text.