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Related Experiment Video

Updated: Jul 15, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

Shoulder arthroplasty: the socket perspective.

Frederick A Matsen1, Ryan T Bicknell, Steven B Lippitt

  • 1Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA, USA. matsen@u.washington.edu

Journal of Shoulder and Elbow Surgery
|April 24, 2007
PubMed
Summary

The glenoid component in shoulder arthroplasty faces challenges with fixation and eccentric loading, leading to implant failure. Alternative biologic resurfacing and nonprosthetic glenoid arthroplasty procedures show promise for durable glenoid arthritis treatment.

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Muscles of the Shoulder

The muscles surrounding the shoulder girdle, including the clavicle and scapula, primarily stabilize the scapula. This stable base allows other muscles to move the humerus effectively. Scapular movements often mirror those of the humerus and extend its range of motion. For instance, raising the arm above the head would not be feasible without simultaneous upward rotation of the scapula.
Anterior Thoracic Muscles
The anterior thoracic muscles include the serratus anterior, subclavius, and...

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Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Biomedical engineering

Background:

  • The glenoid component remains a significant challenge in shoulder arthroplasty, unlike humeral components.
  • Current glenoid designs using polyethylene and polymethyl methacrylate face issues like loosening, deformation, and wear debris.
  • Metal-backed components have also yielded disappointing results.

Purpose of the Study:

  • To address the limitations of current glenoid component designs in shoulder arthroplasty.
  • To explore alternative approaches for managing glenoid arthritis.
  • To investigate methods that improve implant-bone fixation and resist eccentric loading.

Main Methods:

  • Review of current glenoid component materials and designs (polyethylene, polymethyl methacrylate, metal-backed).

Related Experiment Videos

Last Updated: Jul 15, 2026

Reverse Total Shoulder Arthroplasty
10:10

Reverse Total Shoulder Arthroplasty

Published on: July 5, 2011

  • Exploration of biologic resurfacing procedures (fascia, capsule, meniscal allograft interposition).
  • Evaluation of nonprosthetic glenoid arthroplasty, including the "ream-and-run" procedure.

    • Main Results:

    • Existing glenoid components are prone to loosening, plastic deformation, particulate debris, and third-body wear.
    • Metal-backed components have generally shown poor outcomes.
    • Biologic resurfacing and ream-and-run procedures show encouraging preliminary results but require further investigation.

    Conclusions:

    • There is a critical need for improved glenoid component fixation and resistance to eccentric loading in shoulder arthroplasty.
    • Biologic resurfacing and nonprosthetic glenoid arthroplasty represent promising avenues for managing glenoid arthritis.
    • Further research is warranted to establish the efficacy and durability of these alternative approaches, avoiding risks of traditional materials.