caa a22 4500 605460345 CHVBK 20210128100238.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00167-014-2992-7 doi (NATIONALLICENCE)springer-10.1007/s00167-014-2992-7 Quantifying rotator cuff atrophy and fatty degeneration at the supraspinatus origin in the scapular fossa [Elektronische Daten] [Hye Yoo, Ja-Young Choi, Sung Hong, Eo Kim, Sae Kim] Purpose: The aim of this study was to evaluate the location difference (distance) between the conventional Y-view (CYV) and the bony origin of the supraspinatus, and therefore, to suggest hypotrophy measurement in the CYV could be highly influenced by retraction of a torn tendon. Methods: Ninety five arthroscopically repaired rotator cuff tears were retrospectively enrolled in this study. The most lateral portion of the osseous origin of the supraspinatus muscle [the Y-view at the level was newly defined as the supraspinatus origin-view (SOV)] and the CYV were determined on the MRI, and location discrepancy between the two levels was measured. Fatty degeneration and cross-sectional areas of rotator cuff muscles were measured on both views. Subgroup analyses were performed in partial-thickness tears and full-thickness tears with tendon retraction. Results: Distance between the SOV and CYV was 11.2±3.7mm. Discrepancy of the supraspinatus areas at the two views was greater in full-thickness tears than it was in partial-thickness tears without retraction. In the full-thickness tear group, correlation analysis between retraction and cross-sectional areas of the supraspinatus in both views exhibited statistical significance [Pearson's correlation coefficients=0.500 (P<0.001) in the CYV and 0.283 (P=0.017) in the SOV]; however, the correlation was stronger in the CYV. Ratings of fatty degeneration were similar in both views. Conclusions: There is considerable location discrepancy between the osseous origin of the supraspinatus at the suprascapular fossa and the CYV in which fatty degeneration and hypotrophy are routinely measured. Level of evidence: Case series, Level IV. Springer-Verlag Berlin Heidelberg, 2014 Fatty degeneration nationallicence Hypotrophy nationallicence Rotator cuff muscle nationallicence Rotator cuff tear nationallicence Origin of the supraspinatus nationallicence Yoo Hye Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut Choi Ja-Young Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut Hong Sung Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut Kim Eo Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut Kim Sae Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/2(2015-02-01), 399-407 0942-2056 23:2<399 2015 23 167 https://doi.org/10.1007/s00167-014-2992-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-2992-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yoo Hye Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut NATIONALLICENCE 700 1- Choi Ja-Young Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut NATIONALLICENCE 700 1- Hong Sung Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut NATIONALLICENCE 700 1- Kim Eo Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut NATIONALLICENCE 700 1- Kim Sae Department of Orthopedic Surgery, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/2(2015-02-01), 399-407 0942-2056 23:2<399 2015 23 167