Baseplate Options for Reverse Total Shoulder Arthroplasty
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REVERSE SHOULDER ARTHROPLASTY (C CHAMBERS AND E CRAIG, SECTION EDITORS)
Baseplate Options for Reverse Total Shoulder Arthroplasty Wassim Mourad 1 & J. Michael Wiater 1 & Brett P. Wiater 1 & Alexander Martusiewicz 1,2
# Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Purpose of Review Baseplate fixation has been known to be the weak link in reverse total shoulder arthroplasty (RTSA). A wide variety of different baseplates options are currently available. This review investigates the recent literature to present the reader with an overview of the currently available baseplate options and modes of fixation. Recent Findings The main elements that differentiate baseplates are the central fixation element, the size of the baseplate, the shape, the backside geometry, whether or not an offset central fixation exists, the number of peripheral screws, and the availability of peripheral augmentation. Summary The wide array of baseplate options indicates that no particular design has proven superiority. As such, surgeons should be aware of their options and choose an implant that the surgeon is comfortable with and one that best suits the individual patient anatomy. With the growing number of RTSA procedures and registries with long-term follow-up, future investigations will hopefully delineate the ideal baseplate design to optimize survivorship. Keywords Baseplate . Metaglene . Shoulder replacement . Shoulder arthroplasty . Shoulder implant . Glenoid implant
Introduction Glenoid baseplate loosening is a reported complication of reverse total shoulder arthroplasty (RTSA) [1]. As a result, enhancement of baseplate fixation to the glenoid continues to be a focus as new generations of RTSA implants develop. In general, implants have evolved with the goal of maximizing bony ingrowth surface area and achieving stable initial fixation. While the surgeon cannot control the highly variable This article is part of the Topical Collection on Reverse Shoulder Arthroplasty * Alexander Martusiewicz [email protected] Wassim Mourad [email protected] J. Michael Wiater [email protected] Brett P. Wiater [email protected] 1
Department of Orthopaedic Surgery, Beaumont Health System, Oakland University School of Medicine, Royal Oak, MI, USA
2
Department of Orthopaedic Surgery, Beaumont Hospital, 3535 West Thirteen Mile Road, Suite 744, Royal Oak, MI 48073, USA
anatomy of the pathologic glenoid, i.e., posterior wear (primary osteoarthritis or dysplasia), superior wear (longstanding rotator cuff tear arthropathy) or medial wear (primary osteoarthritis or inflammatory arthritis), or bone loss in the setting of revision surgery, baseplate selection is a controllable factor. Shoulder implant manufacturers have developed multiple baseplate designs over the past three decades in order to achieve the best fixation possible. In fact, many manufacturers offer implants that are designed to deal with specific glenoid pathoanatomy. In this article, we will review the currently ava
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