Quantitative assessment of fatty infiltration and muscle volume of the rotator cuff muscles using 3-dimensional 2-point Dixon magnetic resonance imaging

Journal of Shoulder and Elbow Surgery
Noboru MatsumuraTakeo Nagura

Abstract

In patients with rotator cuff tears, muscle degeneration is known to be a predictor of irreparable tears and poor outcomes after surgical repair. Fatty infiltration and volume of the whole muscles constituting the rotator cuff were quantitatively assessed using 3-dimensional 2-point Dixon magnetic resonance imaging. Ten shoulders with a partial-thickness tear, 10 shoulders with an isolated supraspinatus tear, and 10 shoulders with a massive tear involving supraspinatus and infraspinatus were compared with 10 control shoulders after matching age and sex. With segmentation of muscle boundaries, the fat fraction value and the volume of the whole rotator cuff muscles were computed. After reliabilities were determined, differences in fat fraction, muscle volume, and fat-free muscle volume were evaluated. Intra-rater and inter-rater reliabilities were regarded as excellent for fat fraction and muscle volume. Tendon rupture adversely increased the fat fraction value of the respective rotator cuff muscle (P < .002). In the massive tear group, muscle volume was significantly decreased in the infraspinatus (P = .035) and increased in the teres minor (P = .039). With subtraction of fat volume, a significant decrease of fat-free volume of ...Continue Reading

Citations

Oct 18, 2018·Skeletal Radiology·Paul S MicevychAmee L Seitz
Sep 20, 2019·The American Journal of Sports Medicine·Karl WieserChristian Gerber
Sep 14, 2019·The Journal of the American Academy of Orthopaedic Surgeons·Peter N ChalmersRobert Z Tashjian
Jul 30, 2020·Annals of the New York Academy of Sciences·Obiajulu AghaBrian T Feeley
Sep 18, 2020·Skeletal Radiology·Giovanna MedinaMartin Torriani
Dec 18, 2020·Clinics in Shoulder and Elbow·Jun-Seok LeeSung Bin Han
Feb 16, 2021·Radiologia brasileira·Carolina Freitas LinsMarcello Henrique Nogueira-Barbosa

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