caa a22 4500 605459681 CHVBK 20210128100235.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s00167-014-2857-0 doi (NATIONALLICENCE)springer-10.1007/s00167-014-2857-0 Correlation of clinical symptoms and function with fatty degeneration of infraspinatus in rotator cuff tear [Elektronische Daten] [Joong-Bae Seo, Jae-Sung Yoo, Ho-Seong Jang, Jung-Sang Kim] Purpose: The aim of this study was to analyse the correlation of clinical symptoms and function with the fatty degeneration of the infraspinatus in rotator cuff tears. Methods: A total of 152 patients who had rotator cuff tears was enroled retrospectively. The infraspinatus muscle was divided into two compartments according to the bundle of fibres, and the patients were divided into four groups that reflected fatty degeneration. The muscle strength of the shoulder and clinical symptoms was investigated. Results: The severity of the rotator cuff tear and retraction increased with fatty degeneration of both the superior and inferior parts in the infraspinatus muscles. Because of the increasing fatty degeneration of the superior part of the infraspinatus, the shoulder strength index (SSI) of abduction had poor results. Additionally, as the fatty degeneration of the inferior part of the infraspinatus increased, the SSI of abduction and external rotation had worse results. Conclusions: Fatty degeneration of the superior part of the infraspinatus has no correlation with the power of external rotation but has a negative correlation with the power of abduction. Moreover, fatty degeneration of the inferior part of the infraspinatus has a negative correlation with both the power of abduction and external rotation. Level of evidence: Retrospective study, Level IV. Springer-Verlag Berlin Heidelberg, 2014 Infraspinatus nationallicence Rotator cuff tear nationallicence Fatty degeneration nationallicence Atrophy nationallicence Seo Joong-Bae Kinesiologic medical science, Dankook University Graduate School, Cheoan, Korea aut Yoo Jae-Sung Department of Orthopaedic Surgery, Dankook University College of Medicine, 119, Dandae-ro Dongnam-gu, 330-715, Cheonan-si, Chungnam, Republic of Korea aut Jang Ho-Seong Department of Orthopaedic Surgery, Dankook University College of Medicine, 119, Dandae-ro Dongnam-gu, 330-715, Cheonan-si, Chungnam, Republic of Korea aut Kim Jung-Sang Department of Orthopaedic Surgery, Dankook University College of Medicine, 119, Dandae-ro Dongnam-gu, 330-715, Cheonan-si, Chungnam, Republic of Korea aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/5(2015-05-01), 1481-1488 0942-2056 23:5<1481 2015 23 167 https://doi.org/10.1007/s00167-014-2857-0 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/s00167-014-2857-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Seo Joong-Bae Kinesiologic medical science, Dankook University Graduate School, Cheoan, Korea aut NATIONALLICENCE 700 1- Yoo Jae-Sung Department of Orthopaedic Surgery, Dankook University College of Medicine, 119, Dandae-ro Dongnam-gu, 330-715, Cheonan-si, Chungnam, Republic of Korea aut NATIONALLICENCE 700 1- Jang Ho-Seong Department of Orthopaedic Surgery, Dankook University College of Medicine, 119, Dandae-ro Dongnam-gu, 330-715, Cheonan-si, Chungnam, Republic of Korea aut NATIONALLICENCE 700 1- Kim Jung-Sang Department of Orthopaedic Surgery, Dankook University College of Medicine, 119, Dandae-ro Dongnam-gu, 330-715, Cheonan-si, Chungnam, Republic of Korea aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/5(2015-05-01), 1481-1488 0942-2056 23:5<1481 2015 23 167