JaLCDOI 10.18926/AMO/52011
FullText URL 67_6_377.pdf
Author Sakoma, Yoshimasa| Sano, Hirotaka| Shinozaki, Nobuhisa| Itoigawa, Yoshiaki| Yamamoto, Nobuyuki| Itoi, Eiji|
Abstract The pathogenetic roles of the coracoacromial arch in the development of rotator cuff tears are still controversial. This study compared the anteroposterior coverage of the humeral head by the coracoacromial arch between shoulders with and without full-thickness rotator cuff tears. Forty-two shoulders from 21 embalmed cadaveric specimens were macroscopically examined. Specimens were divided into 2 groups:shoulders with full-thickness cuff tears (tear group) and those with intact cuff tendons (normal group). The coverage angle of each component of the coracoacromial arch was measured using true lateral photographs. We also measured the angle of the total arc of the coracoacromial arch, as well as the angle of the anterior acromial projection. These data were compared between the tear group and the normal group. Although no significant differences were observed in the total arc of the coracoacromial arch between the groups, the tear group had significantly less coverage by the coracoacromial ligament than did the normal group (p<0.05). Moreover, greater anterior acromial projection was observed in the tear group (p<0.05). These results suggest that greater coverage of the bony structures on the rotator cuff may correlate with the development of rotator cuff tears.
Keywords rotator cuff tear coracoacromial arch humeral head anatomy
Amo Type Original Article
Published Date 2013-12
Publication Title Acta Medica Okayama
Volume volume67
Issue issue6
Publisher Okayama University Medical School
Start Page 377
End Page 383
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2013 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 24356722
Web of Science KeyUT 000328915700006