US 10,537,446 B2Granted

Method and instruments for assembling an orthopaedic prosthesis

AssigneeDepuy Ireland Unlimited Company

InventorsMegan Wallace, Carl F. Livorsi, Jeremy Oden, Gregory S. Meadows, Francisco A. Amaral, Michael J. Brock, Anthony J. Webb, Craig S. Tsukayama, Karen N. Moeller, Richard C. Ditto

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Abstract

A method and instruments to assemble an orthopaedic prosthesis is disclosed. The system may also include prosthetic trial components, which may be used to size and select the components of the orthopaedic prosthesis. The system may include components of the orthopaedic prosthesis such as, for example, a prosthetic femoral component, a prosthetic tibial component, a prosthetic stem component, and a prosthetic sleeve component.

Claims19

Dependent claims

A method of assembling an orthopaedic prosthesis, the method comprising:

aligning a tibial trial construct with a surgical instrument that includes a mounting platform and a stabilizer arm, the tibial trial construct comprising a base trial that defines a first axis and an offset adaptor trial that defines a second axis that is offset from the first axis,
positioning the tibial trial construct on the mounting platform,
rotating the mounting platform to position the first axis and the second axis in a plane extending vertically through the stabilizer arm,
advancing the stabilizer arm along the vertically-extending plane to engage the stabilizer arm with the tibial trial construct,
locking the mounting platform to prevent rotation relative to the stabilizer arm,
positioning a tibial prosthetic component on the mounting platform after removing the tibial trial construct such that a third axis defined by a distal post of the tibial prosthetic component is positioned in the plane,
positioning a tibial offset adaptor on the distal post, the tibial offset adaptor including a distal end that defines a fourth axis that is offset from the third axis,
rotating the distal end of the tibial offset adaptor to position the fourth axis in the vertically-extending plane, and
securing the tibial offset adaptor to the tibial prosthetic component with the third axis and the fourth axis positioned in the plane.

6 more elements

A method of assembling an orthopaedic prosthesis, the method comprising:

rotating a mounting platform of a surgical instrument about a vertically-extending axis,
attaching a carrier to the mounting platform,
positioning a first tibial prosthetic component on the carrier, the first tibial prosthetic component including a tibial tray and a post extending from the tibial tray,
advancing a first clamp plate of the carrier into engagement with the tibial tray to secure the tibial tray between the first clamp plate and a second clamp plate of the carrier, and
securing a second tibial prosthetic component to the post of the first tibial prosthetic component,
wherein securing the second tibial prosthetic component to the post of the first tibial prosthetic component includes sliding the second tibial prosthetic component along a tapered outer surface of the post to secure the second tibial prosthetic component to the post, the second tibial prosthetic component including a stepped outer surface, and
wherein securing the second tibial prosthetic component to the post of the first tibial prosthetic component further includes attaching a first end of an impactor to a distal end of the second tibial prosthetic component and applying force to a second end of the impactor.

4 more elements

Dependencies are inferred from the claim text.