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Muscles of the Shoulder

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Related Experiment Video

Updated: Jan 12, 2026

Reverse Total Shoulder Arthroplasty

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Glenoid baseplate position in reverse shoulder arthroplasty.

Bhargavi Maheshwer¹, Lucas R Haase¹, Raymond E Chen¹

¹Case Western Reserve University, University Hospitals Cleveland Medical Center, Cleveland, OH, USA.

JSES Reviews, Reports, and Techniques

|November 3, 2025

Summary

Optimal glenoid baseplate positioning in reverse shoulder arthroplasty remains debated. Current research suggests inferior placement may not be essential with lateralized designs, but further study on glenoid version is needed.

Keywords:

Baseplate Glenoid Inclination Outcomes Shoulder arthroplasty Version

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Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

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Published on: March 12, 2021

Area of Science:

Orthopedic Surgery
Biomedical Engineering
Biomechanics

Background:

Reverse shoulder arthroplasty (RSA) is increasingly popular, prompting renewed interest in baseplate positioning.
Understanding glenoid baseplate positioning is crucial for optimizing RSA outcomes and minimizing complications.

Purpose of the Study:

To review current literature on glenoid baseplate positioning in RSA.
To analyze clinical and biomechanical perspectives of baseplate placement and inclination.
To discuss how evolving implant designs impact positioning parameters.

Main Methods:

Conducted an extensive literature search of biomechanical and clinical studies.
Investigated outcomes related to variations in baseplate positioning and inclination.
Examined changes in positioning parameters with modern implant designs.

Main Results:

No clear consensus exists on the gold standard for glenoid baseplate placement.
Inferior glenoid placement may be unnecessary with lateralized glenoid designs.
Inferior tilt offers biomechanical strength, potentially mitigating superior tilt issues with lateralized designs.

Conclusions:

Optimal glenoid version for RSA remains largely unknown.
The significance of glenoid baseplate positioning for functional outcomes requires re-evaluation due to rapid RSA design advancements.