The Characteristics of the Favard E4 Glenoid Morphology in Cuff Tear Arthropathy: A CT Study

Journal of Clinical Medicine
Gilles WalchMarc Olivier Gauci

Abstract

Cuff tear arthropathy (CTA) is characterized by superior migration of the humeral head with superior erosion of the glenoid. Rarely, humeral head migration can be anteroinferior with associated anterior erosion of the glenoid, a pattern described by Favard as the type E4 glenoid. The purpose of this retrospective imaging study was to analyze the 2D and 3D characteristics of the E4 glenoid. A shoulder arthroplasty database of 258 cuff tear arthropathies was examined to identify patients with an E4 type deformity. This resulted in a study cohort of 15 females and 2 males with an average age of 75 years. All patients had radiographs and CT scans available for analysis. CT-scan DICOM (Digital Imaging and Communications in Medicine) data were uploaded to a validated three-dimensional (3D) imaging software. Muscle fatty infiltration, glenoid measurements (anteversion, inclination), and humeral head subluxation according to the scapular plane were determined. The mean anteversion and inclination of the E4 cohort were 32° ± 14° and -5° ± 2, respectively. The mean anterior subluxation was 19% ± 16%. All cases had severe grade 3 or 4 fatty infiltration of the infraspinatus, whereas only 65% had grade 3 or 4 subscapularis fatty infiltrati...Continue Reading

References

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Jun 2, 2009·Journal of Shoulder and Elbow Surgery·Christian GerberSandro F Fucentese
Dec 1, 2010·Clinical Orthopaedics and Related Research·Christophe LévigneGilles Walch
Sep 12, 2012·Orthopaedics & Traumatology, Surgery & Research : OTSR·G MoineauUNKNOWN French Society for Shoulder & Elbow (SOFEC)
May 20, 2014·Journal of Shoulder and Elbow Surgery·Birgit S WernerFrank Gohlke
Apr 23, 2016·Journal of Shoulder and Elbow Surgery·Matthijs JacxsensLieven De Wilde
Aug 16, 2016·Journal of Shoulder and Elbow Surgery·Patric RaissGilles Walch
Jan 4, 2018·The Journal of Bone and Joint Surgery. American Volume·Pascal BoileauGilles Walch

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Methods Mentioned

BETA
total shoulder arthroplasty

Software Mentioned

Glenosys
SAS

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