Glenosphere design affects range of movement and risk of friction-type scapular impingement in reverse shoulder arthroplasty

The Bone & Joint Journal
Birgit S WernerG Walch

Abstract

Scapular notching is a frequently observed radiographic phenomenon in reverse shoulder arthroplasty (RSA), signifying impingement of components. The purposes of this study were to evaluate the effect of glenoid component size and glenosphere type on impingement-free range of movement (ROM) for extension and internal and external rotation in a virtual RSA model, and to determine the optimal configuration to reduce the incidence of friction-type scapular notching. Preoperative CT scans obtained in 21 patients (three male, 18 female) with primary osteoarthritis were analyzed using modelling software. Two concurrent factors were tested for impingement-free ROM and translation of the centre of rotation: glenosphere diameter (36 mm vs 39 mm) and type (centred, 2 mm inferior eccentric offset, 10° inferior tilt). Glenosphere size was most predictive of increased extension and external rotation, whereas lateralization of the centre of rotation was the most predictive factor for internal rotation. A larger diameter of glenosphere combined with a 10° tilted configuration demonstrated superior values for extension and external rotation, whereas the eccentric component improved internal rotation by a mean 8.9° (standard deviation 2.7°) comp...Continue Reading

References

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Feb 24, 2005·Journal of Shoulder and Elbow Surgery·Pascal BoileauFrederic Balg
Oct 1, 2005·Journal of Shoulder and Elbow Surgery·Richard W NyffelerChristian Gerber
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Jun 19, 2008·Journal of Shoulder and Elbow Surgery·Christophe LévigneGilles Walch
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Oct 16, 2016·Journal of Shoulder and Elbow Surgery·Carlos TorrensFernando Santana

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Citations

Nov 13, 2018·The Bone & Joint Journal·E R WagnerJ Sanchez-Sotelo
Apr 2, 2019·The Bone & Joint Journal·A LädermannC Gerber
Dec 31, 2019·Current Reviews in Musculoskeletal Medicine·Stephen G ThonRachel M Frank
Nov 28, 2019·Current Reviews in Musculoskeletal Medicine·Caitlin M RuggDrew A Lansdown
Nov 3, 2020·The Bone & Joint Journal·Young Hoon JangSae Hoon Kim
Feb 15, 2020·Orthopaedics & Traumatology, Surgery & Research : OTSR·Alexandre LädermannPhilippe Collin
Mar 30, 2021·Orthopaedics & Traumatology, Surgery & Research : OTSR·Julien PaclotThomas Amouyel

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