Metaphyseal cones and sleeves are an increasingly common component utilized in revision total knee arthroplasty. These partially porous devices have a high surface area and aim to integrate with cancellous bone of the distal femur and proximal tibia to increase the stability of the implant. Incidences of metal-hypersensitivity and macrophage-stimulated osteolysis have motivated the development of a non-metal alternative in the...