A new elbow replacement system developed by three University of Missouri researchers could improve mobility and comfort for people dealing with severe joint pain or injury.

Unlike traditional elbow implants that use a hinge design, this new system features a ball-and-socket structure that allows for a more natural range of motion and greater long-term durability.

Trent Guess, an associate professor with the Department of Physical Therapy in the Mizzou College of Health Sciences, helped develop the system, which was recently awarded a U.S. patent for its innovative design. The new approach is intended to provide a safer, longer-lasting alternative for patients with arthritis, fractures or other elbow conditions that severely limit movement.

“The goal was to create an implant that functions more like a real elbow, giving patients greater flexibility and reducing the risk of implant failure,” Guess said. “Computational simulations allowed us to optimize the implant design to mimic the motion and constraints of the native elbow. This produces more natural motion and better load distribution, which could improve patient outcomes.”  

Guess designed the system in partnership with James Cook, the William & Kathryn Allen Distinguished Professor in Orthopaedic Surgery at the MU School of Medicine, and Matthew J. Smith, director of outpatient clinics at the Missouri Orthopaedic Institute. The implant is modular and customizable, allowing surgeons to tailor the replacement to individual patient needs.