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The Bone & Joint Journal
Vol. 107-B, Issue 1 | Pages 97 - 102
1 Jan 2025
Implant survival at four years for hemiarthroplasty and total shoulder arthroplasty in the treatment of atraumatic avascular necrosis of the humeral head
Smeitink N Schröder FF Dorrestijn O Spekenbrink-Spooren A Govaert LHM Veen EJD
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Aims. Hemiarthroplasty (HA) and total shoulder arthroplasty (TSA) are often the preferred forms of treatment for patients with atraumatic avascular necrosis of the humeral head when conservative treatment fails. Little has been reported about the survival of HA and TSA for this indication. The aim of this study was to investigate the differences in revision rates between HA and TSA in these patients, to determine whether one of these implants has a superior survival and may be a better choice in the treatment of this condition. Methods. Data from 280 shoulders with 159 primary HAs and 121 TSAs, which were undertaken in patients with atraumatic avascular necrosis of the humeral head between January 2014 and January 2023 from the Dutch Arthroplasty Register (LROI), were included. Kaplan-Meier survival analysis and Cox regression analysis were undertaken. Results. Within four years of follow-up, a total of 15 revisions were required, involving seven HAs (4%) and eight TSAs (7%). This difference was not statistically significant (p = 0.523). Two HAs were revised because of progressive glenoid erosion, and three TSAs were revised for loosening of the glenoid component. The cumulative percentages of revision of HA and TSA were 6% and 8%, respectively (HR 1.1 (95% CI 0.5 to 2.7)). Conclusion. We found no significant difference in short- to mid-term implant survival between the use of a HA and a TSA in the treatment of atraumatic avascular necrosis of the humeral head, without significant glenoid wear. Cite this article: Bone Joint J 2025;107-B(1):97–102

The Bone & Joint Journal
Vol. 105-B, Issue 11 | Pages 1189 - 1195
1 Nov 2023
Effect of using a small baseplate on the radiological and clinical outcomes of reverse total shoulder arthroplasty in Asian patients
Kim JS Kim SH Kim SC Park JH Kim HG Lee SM Yoo JC
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Aims

The aim of this study was to compare the clinical and radiological outcomes of reverse shoulder arthroplasty (RSA) using small and standard baseplates in Asian patients, and to investigate the impact of a mismatch in the sizes of the glenoid and the baseplate on the outcomes.

Methods

This was retrospective analysis of 50 and 33 RSAs using a standard (33.8 mm, ST group) and a small (29.5 mm, SM group) baseplate of the Equinoxe reverse shoulder system, which were undertaken between January 2017 and March 2021. Radiological evaluations included the size of the glenoid, the β-angle, the inclination of the glenoid component, inferior overhang, scapular notching, the location of the central cage in the baseplate within the vault and the mismatch in size between the glenoid and baseplate. Clinical evaluations included the range of motion (ROM) and functional scores. In subgroup analysis, comparisons were performed between those in whom the vault of the glenoid was perforated (VP group) and those in whom it was not perforated (VNP group).

The Bone & Joint Journal
Vol. 101-B, Issue 6 | Pages 702 - 707
1 Jun 2019
Reverse shoulder arthroplasty has a higher risk of revision due to infection than anatomical shoulder arthroplasty
Moeini S Rasmussen JV Salomonsson B Domeij-Arverud E Fenstad AM Hole R Jensen SL Brorson S
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Aims

The aim of this study was to use national registry database information to estimate cumulative rates and relative risk of revision due to infection after reverse shoulder arthroplasty.

Patients and Methods

We included 17 730 primary shoulder arthroplasties recorded between 2004 and 2013 in The Nordic Arthroplasty Register Association (NARA) data set. With the Kaplan–Meier method, we illustrated the ten-year cumulative rates of revision due to infection and with the Cox regression model, we reported the hazard ratios as a measure of the relative risk of revision due to infection.

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