A Post-Market, Retrospective Study on 3D Metal Tibial and Femoral Cones

Study Summary

GMK Revision Knee System is part of the Medacta GMK® (Global Medacta Knee) Total Knee System and is indicated when a higher level of varus/valgus constraint is needed. The external shape of the GMK® Revision femoral component is identical to that of GMK® Primary. The GMK® Revision differs from GMK® Primary by three important design features: i. The addition of a box which allows a stem to be inserted into the femoral canal; ii. The addition of screw lugs so that augments can be placed on the distal and posterior resections, and; iii. The box which also allows various levels of constraint to be added to the polyethylene insert. The tibial component offers the ability to place augments. Indications for Use: The GMK® Total Knee System is designed for cemented use in total knee arthroplasty if there is evidence of sufficient sound bone to seat and support the components. This knee replacement system is indicated in the following cases: * Severely painful and/or disabled joint as a result of arthritis, traumatic arthritis, rheumatoid arthritis or polyarthritis * Avascular necrosis of femoral condyle * Post traumatic loss of joint configuration * Primary implantation failure * Ligamentous Instability Tibial augments are to be attached to the tibial baseplate with both the fixing cylinders and bone cement. In case a semi-constrained liner is used, an extension stem must be implanted both on the tibial and on the femoral component. GMK® Revision femoral components are manufactured of Cobalt Chromium Molybdenum (CoCrMo) according to ISO 5832-4:1996, Implants for Surgery- Metallic materials - Part 4: Cobalt-Chromium-Molybdenum Casting Alloy, the same as the GMK® Primary femoral components. They have an asymmetric patellar groove (left and right) with different radii of curvature in coronal plane as well as non-parallel anterior and posterior cuts (wedge shape). The GMK® Revision posterior stabilized femoral components are designed for use without cruciate ligaments whe

Primary Outcome

Oxford Knee Score (OKS) is a 12-item patient-reported PRO specifically designed and developed to assess function and pain after total knee replacement (TKR) surgery (arthroplasty). The overall score for the OKS is acquired by simply summing the scores received for individual questions. This results in a continuous score ranging from 0 (most severe symptoms/problems) to 48 (least severe).

Conditions Studied

Interventions

• DEVICE 3D Metal Tibial and Femoral cones

Study Locations (1)