The new design is designed to reduce the risk of future dislocation or artificial shoulder component loosening, two common problems with existing products. However, clinical research still needs to be conducted to show the complete benefits of this new patented design.
"Approximately 20,000 total shoulder replacement surgeries are performed annually in the U.S. with the volume growing at 5% a year due to the increasingly active lives led by aging members of America's post World War II baby boom generation,” said Joseph Lipman, managing director of HSS Ventures, an affiliate of the Hospital for Special Surgery focused on product development, technology licensing and venture investing in orthopaedics and rheumatology. Mr. Lipman is the director of joint development at Hospital for Special Surgery.
Shoulder joint replacements are composed of two parts, humeral and glenoid, which function in a ball-in-socket manner like other joints in the body. Finding the right design to optimise movement and minimize wear over time has been a challenge in the past. Prior designs sometimes have been associated with instability and component loosening over time, the leading complication of total shoulder arthroplasty (replacement).
The HSS-patented design involves the glenoid component and features two radii of curvature, decreasing the likelihood of dislocation, a problem seen in current designs on the market. The design can be used with the various materials used in replacement shoulders, including metal or polyethylene.
MEDICA.de; Source: Hospital for Special Surgery