Smith + Nephew

Smith & Nephew Orthopaedics Ag

Smith Nephew Asia Pacific Pte. Limited

Christopher Ray Cyko

Jason Sean Jordan

Dean Hughes

Christopher B Carr

Jeffrey N Yeager

Tom J Francis

Sachin P Budhabhatti

Bradley Bomar

Ravi Bagathur Ramasamy

Haixiang Hu

Jason R Jordan

An exemplary trial component is configured to be attached to a resected bone having a resection surface, and includes a body portion and a sliding fastening mechanism movably coupled to the body portion. The body portion has an articular surface, a bone-facing surface, and at least one drill guide extending through the articular surface and the bone-facing surface. The sliding fastening mechanism includes at least one post extending beyond the bone-facing surface, and the post is operable to engage the resection surface to retain the position of the sliding fastening mechanism relative to the bone. When attached to the bone, the trial component is structured to selectively retain the position of the body portion relative to the bone, and to selectively permit adjustment of the position of the body portion relative to the bone.

Adjustable position trial component with drill guide

Unicondylar tibia implant devices having a bone-facing, distal side that can be detailed with cement fixation features and may include any of or a plurality of grooves, pegs, fins, rails, cavities, and/or coating whereby the geometry of the implant device improves implant-to-cement or cement-to-bone fixation characteristics exceeding that of a traditional flat surface. The implant device may also include a proximal side facing away from the bone-facing, distal side and having a geometry that provides either articulation with (cartilage and meniscal substituting) or receipt of a secondary device coupleable to the implant device on the distal side of the secondary device that features an away-from-bone facing articulating feature. Additionally, the geometry of the implant device in anterior-posterior and medial-lateral directions, among other directions, provides a variety of improvements relative to currently available devices.

Unicondylar tibia implants

Embodiments of the invention include a knee arthroplasty trialing system and method with a femoral component and a tibial trial that has one or more spacers and one or more articular trials. Some embodiments include spacers and articular trials that may be moved in and out of the joint space without significantly distracting the femoral component away from the tibial trial. Some spacers and trials are configured to be inserted and removed from a joint space substantially along an anterior-posterior axis.

Tibial trials with sliding spacers and method

Embodiments of the invention include a cutting guide () and methods of using the cutting guide to prepare bone for one or more knee arthroplasty implants. Some embodiments include an alignment mechanism (), a cutting head (), and an ankle clamp ().

Cutting guide and method

Embodiments of the invention include instruments and methods for preparing a femur to receive a femoral component of a knee arthroplasty system, with some embodiments configured to enable anterior referencing techniques, posterior referencing techniques, and to facilitate intraoperative switching between anterior and posterior referencing techniques. Other embodiments of the invention include cutting blocks and methods for preparing a femur to receive a knee arthroplasty system femoral component, with some embodiments including cutting blocks that can be used in both an anterior referencing technique and a posterior referencing technique, thereby reducing the number of cutting blocks required to provide an instrument set capable of implanting all available sizes of femoral components with both anterior and posterior referencing techniques.

Growing community of inventors

Memphis, TN, United States of America

Christopher Ray Cyko