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. 2024 Apr 18;25(1):20.
doi: 10.1186/s10195-024-00764-4.

Lateralising reverse shoulder arthroplasty using bony increased offset (BIO-RSA) or increasing glenoid component diameter: comparison of clinical, radiographic and patient reported outcomes in a matched cohort

Arno A Macken  1   2 , Geert Alexander Buijze  3   4   5 , Michael Kimmeyer  3 , Tilman Hees  3 , Denise Eygendaal  6 , Michel van den Bekerom  7   8 , Laurent Lafosse  3 , Thibault Lafosse  3
Affiliations

Lateralising reverse shoulder arthroplasty using bony increased offset (BIO-RSA) or increasing glenoid component diameter: comparison of clinical, radiographic and patient reported outcomes in a matched cohort

Arno A Macken et al. J Orthop Traumatol. .

Abstract

Background: This study aims to compare the range of motion (ROM) of reverse shoulder arthroplasty lateralised by bony increased offset (BIO-RSA) using a standard 38-mm (mm) component to regular reverse shoulder arthroplasty (RSA) lateralised by using a 42-mm glenoid component. The secondary aims are to compare patient-reported and radiographic outcomes between the two groups.

Materials and methods: All patients with a BIO-RSA and size 38 glenosphere were retrospectively identified and matched to patients with a regular RSA and size 42 glenosphere. Matched patients were invited for a follow-up visit. ROM was assessed as well as radiographic outcomes (lateralisation, distalisation, inferior overhang, scapular notching, heterotopic bone formation, radiolucency, stress shielding, bone graft healing and viability and complications) and patient-reported outcomes (subjective shoulder value, Constant score, American Shoulder and Elbow Surgeons, activities of daily living which require internal rotation, activities of daily living which require external rotation and a visual analogue scale for pain). Outcomes were compared between the two groups.

Results: In total, 38 BIO-RSAs with a size 38 glenosphere were matched to 38 regular RSAs with a size 42 glenosphere. Of the 76 matched patients, 74 could be contacted and 70 (95%) were included. At the final follow-up, there were no differences between the two groups in ROM, patient-reported outcomes or radiographic outcomes (p > 0.485).

Conclusions: Using a larger glenosphere is a feasible alternative to BIO-RSA for lateralising RSA, providing comparable ROM, patient-reported and radiographic results, while potentially decreasing costs, operative time and complication rates.

Keywords: Bony increased offset reverse shoulder arthroplasty; Patient-reported outcomes; Range of motion.

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Conflict of interest statement

AAM declares no competing interests; GAB provided consultancy services for Stryker; MK declares no competing interests; TL declares no competing interests; DE declares no competing interests; MvdB declares no competing interests; LL received royalties from Depuy and provided consultancy services for Stryker and Smith and Nephew; TL provided consultancy for Depuy, Stryker and Smith and Nephew. This study received no funding or other forms of support.

Figures

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References

    1. Boileau P, Watkinson DJ, Hatzidakis AM, Balg F. Grammont reverse prosthesis: design, rationale, and biomechanics. J Shoulder Elb Surg. 2005;14:S147–S161. doi: 10.1016/j.jse.2004.10.006. - DOI - PubMed
    1. Umar M, Hughes M, Barrington-Ford LM, Pearson K, Waseem M. Comparison of bony increased offset-reverse shoulder arthroplasty and standard reverse shoulder arthroplasty outcomes. J Orthop. 2020;18:58–62. doi: 10.1016/j.jor.2019.10.019. - DOI - PMC - PubMed
    1. Boileau P, Moineau G, Roussanne Y, O’Shea K. Bony increased-offset reversed shoulder arthroplasty minimizing scapular impingement while maximizing glenoid fixation. Clin Orthop Relat Res. 2011;469:2558–2567. doi: 10.1007/s11999-011-1775-4. - DOI - PMC - PubMed
    1. Torrens C, Guirro P, Miquel J, Santana F. Influence of glenosphere size on the development of scapular notching: a prospective randomized study. J Shoulder Elb Surg. 2016;25:1735–1741. doi: 10.1016/j.jse.2016.07.006. - DOI - PubMed
    1. Müller AM, Born M, Jung C, Flury M, Kolling C, Schwyzer HK, Audigé L. Glenosphere size in reverse shoulder arthroplasty: is larger better for external rotation and abduction strength? J Shoulder Elb Surg. 2018;27:44–52. doi: 10.1016/j.jse.2017.06.002. - DOI - PubMed

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