AAOS Now

Published 5/1/2009

Tools and Technology Update

DePuy lanches products at AAOS Annual Meeting
DePuy Orthopaedics Inc. (DePuy) launched the following new products at the 2009 AAOS Annual Meeting: the Anatomic Locked Plating Systems (ALPS) for hand and distal fibula fractures; the Sigma® High Performance (HP) Partial Knee; the Sigma® CR150 High-Flex Knee; and the aSphere™ M-Spec Femoral Head. The company also unveiled customized patient instrumentation, TruMatch™ Personalized Solutions, for knee replacement.

The ALPS hand fracture system is the company’s first plating system for complex fractures of metacarpal and phalangeal bones. The contoured plates are designed to mimic the anatomy of the fingers and are available in five styles that can be used to treat a wide range of fractures using titanium alloy and cobalt chrome screws for strong and stable fixation.

For distal fibular fractures, the company introduced the ALPS composite locking plate system. The small-fragment plate features a bulleted tip at the proximal end to facilitate insertion under the muscles of the lower leg.

The Sigma HP Partial Knee System can replace the medial, lateral, and patellofemoral compartments while providing low wear and up to 155 degrees of flexion. The tibial implants utilize a moderately cross-linked, oxidatively stable polyethylene. The system comes with a complete line of instrumentation. A variety of training options to match the level of surgeon experience with the procedure is available.

The Sigma CR150 High-Flex Knee is the company’s first high flexion, cruciate-retaining knee replacement. Combining high function and conformity while accommodating up to 150 degrees of flexion, this high flex implant includes oxidatively stable polyethylene and a highly polished cobalt chrome tray. The supporting instrument system is designed to enhance procedure efficiency, surgical precision, and flexibility.

The aSphere™ M-Spec Femoral Head is a metal hip bearing option that potentially reduces cumulative wear by 80 percent and associated ion release by 77 percent compared with conventional metal-on-metal technology. Precision contoured aSphere heads approximate the shaping that occurs during the in vivo run-in wear phase. The design incorporates a wear-resistance zone to decrease metal wear debris and ion release. The product was cleared for marketing by the FDA in December 2008.

The aSphere head is compatible with DePuy’s complete line of advanced femoral stems to provide surgeons greater flexibility based on their preferred technique and the patient’s anatomy.

DePuy also introduced TruMatch Personalized Solutions to improve implant positioning and increase procedure efficiency. The instrumentation’s Advanced Planning Software can be customized to both the patient’s anatomy and the surgeon’s surgical preferences, utilization of the mechanical axis for alignment, integrated metal saw and pin captures for improving accuracy and minimizing osteolytic debris, and sterile packaging for operating room efficiency.

For more information on any of these products, visit www.depuy.com