Discovery® Elbow System

Bearing Design

• Spherical hinge reduces wear by providing increased articular surface contact area between the humeral and ulnar components
• Varus/valgus laxity of 7 degrees
• Optimized hinge size addresses individual anatomy by allowing any humeral component to be used with any ulnar component
• Posterior hinge allows for assembly or disassembly without compromising either epicondyle

Humeral Stem

• Bowed stem reproduces anatomy through 5 degree lateral offset and 5 degree internal rotation
• Cylindrical base preserves bone to minimize stress risers at the supracondylar columns¹
• Anterior flange for enhanced rotational stability and to help prevent posterior sublaxation

Ulnar Stem

• 23 degree anterior neck angle of stem allows for anatomic axis of motion
• Polyethylene offset and lateral bow provide for reproduced anatomy
• Clinically proven ArCom® polyethylene reduces the possibility of stress hemi-delamination and early polyethylene failure^2,3

• Figgie, M. P. et al. Total Elbow Arthroplasty. Total Joint Replacement. 659-706, 1991.
• Won, C.H. et al. Effect of Resin Type and Manufacturing Method of Wear of Polyethylene Tibial Components. Clinical Orthopaedics and Related Research. 376: 161-71, 2000.
• Currier, B. H. et al. Effect of Fabrication Method Resin Type on Performance of Tibal Bearings. Journal of Biomedical Materials Research. 53(2): 143-51, 2000.