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Three-Tesla MR imaging of the elbow in non-symptomatic professional baseball pitchers

Del Grande, Filippo ; Aro, Michael ; Farahani, Sahar ; Wilckens, John ; Cosgarea, Andrew ; Carrino, John

In: Skeletal Radiology, 2015, vol. 44, no. 1, p. 115-123

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    Titre
    • Three-Tesla MR imaging of the elbow in non-symptomatic professional baseball pitchers
    Auteur
    • Del Grande, Filippo. The Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 601 North Wolfe Street, 21287, Baltimore, MD, USA
    • Aro, Michael. The Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 601 North Wolfe Street, 21287, Baltimore, MD, USA
    • Farahani, Sahar. The Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 601 North Wolfe Street, 21287, Baltimore, MD, USA
    • Wilckens, John. Department of Orthopaedic Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
    • Cosgarea, Andrew. Department of Orthopaedic Surgery, Johns Hopkins Hospital, Baltimore, MD, USA
    • Carrino, John. The Russell H Morgan Department of Radiology and Radiological Sciences, Johns Hopkins University School of Medicine, 601 North Wolfe Street, 21287, Baltimore, MD, USA
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Skeletal Radiology, 2015, vol. 44, no. 1, p. 115-123. Springer Berlin Heidelberg
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:331781
    Summary
    Objectives: To retrospectively evaluate the qualitative and quantitative 3-T MR imaging features of the elbow in non-symptomatic professional baseball pitchers presenting as major league draft picks or trades. Materials and methods: The Institutional Review Board (IRB) approved the HIPPA-compliant study. Informed consent was waived. Twenty-one professional non-symptomatic baseball pitchers (mean age 23, range 18 to 34years old) underwent 3-T MR imaging of the pitching elbow. Two experienced readers independently performed qualitative (collateral ligaments, tendons, cartilage, bones, ulnar nerve, olecranon fossa, and joint fluid) and quantitative (collateral ligaments and posteromedial plica) evaluation. Descriptive statistics were calculated. Results: Collateral ligament thickening was seen in a high proportion, nearly half, however, without features of full thickness tearing. Tendinosis without tearing was seen in 19% (4/21) of common extensors. Cartilage abnormalities were infrequent. Bone abnormalities manifested as edema in 24% (5/21) and humeroulnar osteophytosis. Ulnar nerve signal and/or morphologic abnormalities were seen in a very high proportion, up to 81% (17/21). The olceranon fat pad showed scarring features in about one third. The median ligament thicknesses in mm measured: 4.6 UCL anterior bundle, 1.8 UCL posterior bundle, 1.9 RCL, 2.5 LUCL, and 0.7mm anular. The median plica dimensions were 5.3 by 2.2 by 2.7mm. Conclusion: High-resolution 3-T MR imaging frequently shows abnormalities involving the ligaments, tendons, nerves, olecranon fat pad, and bones in non-symptomatic baseball pitchers.