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. 2022 Dec 14;11(24):7416.
doi: 10.3390/jcm11247416.

Humeral and Glenoid Version in Reverse Total Shoulder Arthroplasty: A Systematic Review

Alessandra Berton  1   2 , Umile Giuseppe Longo  1   2 , Lawrence V Gulotta  3 , Sergio De Salvatore  1 , Ilaria Piergentili  1 , Giovanni Calabrese  1 , Federica Roberti  1 , Russell F Warren  3 , Vincenzo Denaro  1   2
Affiliations

Humeral and Glenoid Version in Reverse Total Shoulder Arthroplasty: A Systematic Review

Alessandra Berton et al. J Clin Med. .

Abstract

There is increasing interest in reverse total shoulder arthroplasty (RTSA) as a reliable treatment for arthritic, rotator cuff deficient shoulders. Humeral and glenoid version are controversial parameters that can influence internal and external rotation, muscular forces, and implant stability as outcomes of RTSA. The aim of this study was to obtain an overview of the current knowledge on the effect of both humeral component version and glenoid component version and give recommendations on their most optimal degree for RTSA. A comprehensive quantitative review of the published literature on the effect of humeral version and glenoid version in RTSA was performed, to identify its influence on the range of movement, muscle forces, and intrinsic stability of the reverse prosthesis. Eleven studies were included: nine were biomechanical studies, one was a clinical-radiographic study, and one was an implant design consideration. Anterior stability can be improved by implanting the humeral component in neutral or with some anteversion. Glenoid component retroversion has been proven to reduce the likelihood of subluxation, while increasing ER and ROM at the same time. The study was conducted considering 5° anteversion; neutral; and 5°, 10°, and 20° retroversion of the glenoid component. Although a final opinion has not been yet expressed on the matter, the general consensus tends to agree on restoring 0° to 20° of retroversion of the humeral and glenoid component to yield the best outcomes.

Keywords: glenoid version; humeral version; muscle forces; range of motion; reverse prosthesis; reverse shoulder arthroplasty; stability.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Flowchart of the screening selection.
Figure 2
Figure 2
Risk of bias [17,18,19,20,25,26,27,28,29,30].
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