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Shoulder implant design has been gradually evolving towards shorter implant stems since total shoulder arthroplasty results were first reported over 40 years ago. Reflecting a growing trend of minimally invasive surgeries, stemless arthroplasty is driven by the desire to facilitate smoother revision procedures, and to prevent stem-related complications.
According to a recent market study, the use of stemless implants in shoulder arthroplasty is growing, and it is expected to surpass the use of stemmed implants in Europe by the year 2025. To understand this trend, we can look at multiple factors, including the history, product development, and clinical benefits of stemless implants.
At first glance, the stemless implant is superficially similar to a resurfacing. The main differences are the thicker metaphyseal anchorage, as well as the larger head component that replaces part of the humeral head, rather than just the surface. Therefore, in contrast to resurfacing, stemless arthroplasty allows for glenoid replacement. Stemless shoulder implants do, in fact, have a short stem, although it does not enter the diaphysis of the bone like a stemmed device. Instead, it remains completely in the metaphysis of the humeral neck.
The first stemless arthroplasty product, the T.E.S.S. stemless system, was introduced by Zimmer Biomet in 2004. Since then, various manufacturers have brought their stemless design options into the market. Although stemless arthroplasty is not an entirely new development, with over a decade’s presence in the market, its popularity is much more prominent in Europe than in the United States. In 2015, SIMPLICITI by Wright Medical received approval by the Food and Drug Administration (FDA) and became the first stemless design available in the United States. In Europe, however, the implant’s clinical life began in 2010 in France. Today, there are still only a few options for stemless shoulder implants currently available in the U.S., leaving a large opportunity for manufacturers to take advantage of.
Besides the T.E.S.S. system, Zimmer Biomet’s product portfolio includes two other bone-sparing design options, the Comprehensive Nano, which is the second generation of the T.E.S.S. system, and the Sidus, which entered the European market in 2012. The Comprehensive Nano has a convertible design, which can be utilized in anatomic or reverse arthroplasty. In January 2018, Zimmer Biomet announced that its Sidus Stem-Free Shoulder system had received a FDA clearance.
This article was originally published on Med Device Online, to read more visit https://www.meddeviceonline.com/doc/will-stemless-implants-dominate-the-shoulder-arthroplasty-market-0001
For Further Information
More on the small bone and joint orthopedic devices market in Europe can be found in a series of reports published by iData entitled the Europe Market Report Suite for Small Bone and Joint Orthopedic Devices. This report covers the following market segments: shoulder reconstruction devices, elbow repair devices, hand & wrist devices, foot & ankle devices, plate & screw devices, staple fixation devices and external fixation devices.