Johnson & Johnson Orthopaedics, Inc.

Johnson & Johnson Professional, Inc.

Thomas Luckman

Ernest Quintanilha

Stephen K Guerrera

John D Gundlach

Kenneth G Arsenault

Keith W Greer

A patella clamping device includes a handle portion and a clamp portion. The clamp comprises at least two jaw members that are pivotally joined to one another in a scissors-like orientation. A ratchet mechanism is associated with the device to ensure locking of the clamp in the closed position. A guide mechanism is also provided with the device to ensure a vertical, coaxial closing action of the clamp element.

Patella clamping device

The present invention relates to an instrument and method for performing a partial knee replacement and, in particular, a single condyle replacement method. The instrument includes a tibial mounted platform which has formed thereon a keyed slot for receiving a spacer which spacer is positioned between the femur and tibia of the knee joint being replaced. The spacer receives thereon a positioning element which positioning element includes guides for guiding a drill to drill mounting holes for mounting further instruments used in the knee operation. In particular, the mounting holes are drilled when the femur and tibia are in a predetermined angular relationship with the spacer providing a predetermined spacial relationship. In this way, the mounting holes are properly determined and positioned with respect to the relationship between the femur and tibia. A saw guide is mounted to the mounting holes and used to guide a saw when cutting the anterior chamfer, the posterior chamfer and the posterior femoral cut. A further drill guide is then mounted to the mounting holes after removal of the saw guide for drilling holes for receiving the lugs of the condyle prosthesis.

Instruments for use in knee replacement surgery

A new set of surgical instruments is described which provides a movable constraint such that the instruments include a saw guide which may be used in either a constrained or unconstrained fashion. The instruments have a movable restraint which, in the down position provides a continuous surface with the remainder of the instrument for guiding a saw, and when in the up position provides a constrained slot for guiding the saw of a surgeon in making cuts in prosthesis implantation surgery.

Orthopaedic cutting guides with retractable saw blade slots

A modular prosthesis system having generally planar bone contact surface with an undercut edge around the periphery of the surface and includes augmentation devices which can be attached to the planar surface with a cam locking mechanism secured to the undercut edge to increase the thickness of the prosthesis.

Modular prosthesis

A cutting guide to position a bone cutting device is disclosed. The cutting guide has at least one fixed or stationary surface and a movable surface to create a slot or gap between the fixed surface and movable surface. The cutting device is positioned and held in the slot to make accurate bone cuts.

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Falmouth, MA, United States of America

Thomas Luckman