Related Experiment Video
Updated: May 14, 2026

Reverse Total Shoulder Arthroplasty
Published on: July 5, 2011
Morphology of the normal and arthritic glenoid
Pierre Mansat1, Nicolas Bonnevialle
1Service d'Orthopédie-Traumatologie, Centre Hospitalier Universitaire Toulouse/PURPAN, Place du Dr Baylac, Toulouse, France. pierre.mansat@univ-tlse3.fr
Abstract:
The normal glenoid has a pear-shape aspect and is slightly retroverted. It has a variable orientation in the sagittal plane. The cartilage surface area corresponds to 28 % of the area of the humeral head with a radius of curvature greater than the humeral head. Mechanical properties are significantly higher at the center and posterior edge of the glenoid. With osteoarthritis, the glenoid becomes larger with a greater width and an increasing of the retroversion angle. The wear can be centric or excentric. Mechanical properties are significantly higher at the center and posterior edge of the glenoid.
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