Do the humeral radiographic changes at 5-year follow-up affect the clinical outcomes of press-fit humeral stems in primary reverse shoulder arthroplasties?

García Fernández, Carlos; Lópiz Morales, María Yaiza; Garríguez Pérez, Daniel; Arvinius, Camilla; Ponz, Virginia; Echevarria, Marta; Garrido, Ana; Marco Martínez, Fernando

Do the humeral radiographic changes at 5-year follow-up affect the clinical outcomes of press-fit humeral stems in primary reverse shoulder arthroplasties?

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Official URL

https://doi.org/10.1007/s00590-024-03864-3

Publication date

2024

Authors

García Fernández, Carlos

Lópiz Morales, María Yaiza

Garríguez Pérez, Daniel

Marco Martínez, Fernando

Publisher

Springuer

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URI

https://hdl.handle.net/20.500.14352/107471

Citation

García-Fernández C, Lopiz Y, Garríguez-Pérez D, Arvinius C, Ponz V, Echevarria M, Garrido A, Marco F. Do the humeral radiographic changes at 5-year follow-up affect the clinical outcomes of press-fit humeral stems in primary reverse shoulder arthroplasties? Eur J Orthop Surg Traumatol. 2024 May;34(4):1851-1863. doi: 10.1007/s00590-024-03864-3. Epub 2024 Mar 3. PMID: 38431896.

Abstract

Introduction: The purposes of this study were to analyze and compare the functional outcomes and radiological changes around the press-fit humeral components in two contemporary medialized reverse total shoulder arthroplasty (RTSA) systems at a minimum of 5-year follow-up. Materials and methods: Between December 2003 and December 2015, 249 consecutive RTSAs were performed at our hospital. Of these, 68 primary uncemented RTSA met our inclusion criteria. The Constant-Murley score (CMS), the modified Constant score, a visual analog scale (VAS) and active shoulder range of motion (ROM) were measured pre- and postoperatively. Radiological assessment was performed by plain radiographs at a minimum of 5 years postoperatively. Results: At a mean follow-up of 80.2 months, there was no significant difference (p = .59) between the postoperative functional scores and range of motion of the two groups (Delta Xtend and Lima SMR). Radiological data of stress-shielding were observed in 38 patients (55.9%) being slightly more frequent in the Lima SMR group (21 patients) than in the Delta Xtend group (17 patients) (p = .62). Conclusions: Our study shows that the good functional results are similar between the two uncemented RTSA systems used and that they do not depend on the presence of radiological changes (stress-shielding) in the humeral stem at a minimum 5-year follow-up.