MR Arthrography of the Labral Capsular Ligamentous Complex in the Shoulder: Imaging Variations and Pitfalls

Using MR arthrography, we examined normal anatomy, anatomic variations, and pitfalls of imaging the labral capsular ligamentous complex in the asymptomatic shoulder. We obtained 108 MR arthrograms of the glenohumeral joint in 95 asymptomatic volunteers with axial (108 shoulders) and oblique coronal...

Full description

Saved in:

Bibliographic Details
Published in:	American journal of roentgenology (1976) Vol. 175; no. 3; pp. 667 - 672
Main Authors:	Park, Yang Hee, Lee, Ji Yeon, Moon, Sung Hee, Mo, Jong Hyun, Yang, Bo Kyu, Hahn, Sung Ho, Resnick, Donald
Format:	Journal Article Conference Proceeding
Language:	English
Published:	Leesburg, VA Am Roentgen Ray Soc 01-09-2000 American Roentgen Ray Society
Subjects:	Adult Arthrography Biological and medical sciences Humans Investigative techniques, diagnostic techniques (general aspects) Ligaments, Articular - anatomy & histology Ligaments, Articular - diagnostic imaging Magnetic Resonance Imaging Male Medical sciences Osteoarticular system. Muscles Radiodiagnosis. Nmr imagery. Nmr spectrometry Shoulder Joint - anatomy & histology Shoulder Joint - diagnostic imaging Osteoarticular system Human Ligament Shoulder joint Healthy subject Anatomical variation Shoulder Medical imagery Acetabulum Exploration Nuclear magnetic resonance imaging Joint capsule
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	Using MR arthrography, we examined normal anatomy, anatomic variations, and pitfalls of imaging the labral capsular ligamentous complex in the asymptomatic shoulder. We obtained 108 MR arthrograms of the glenohumeral joint in 95 asymptomatic volunteers with axial (108 shoulders) and oblique coronal (56 shoulders) images. We examined labral shape, patterns of capsular insertion, presence or absence of glenohumeral ligaments, and pitfalls of imaging. Our patients were men (auxiliary policemen) between 19 and 24 years old (mean age, 21 years). The shapes of labra were triangular (anterior part, 64%; posterior part, 47%), round (17%; 33%), flat (2%; 17%), cleaved (11%; 1%), notched (3%; 0%), or absent (2%; 2%). Using the system of Mosely and Overgaard, the anterior capsular insertion was type 1 in 63% of shoulders, type 2 in 20%, and type 3 in 17%; the posterior capsular insertion was type 1 in 60% of shoulders, type 2 in 31%, and type 3 in 9%. The superior and inferior glenohumeral ligaments were present in 99% of shoulders, but the middle glenohumeral ligament was present in only 79%. We also detected many pitfalls of MR imaging in identifying findings such as the undercutting of the labrum by cartilage (32% of shoulders), prominent axillary folds (46%), sublabral holes (7%) or recesses (33%), Buford complexes (2%), and sulci between the biceps tendon and superior labrum (30%). Knowledge of normal anatomy and anatomic variations of the labral complex is important for the examination of the shoulder with MR arthrography.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0361-803X 1546-3141
DOI:	10.2214/ajr.175.3.1750667