Universität zu Köln

Leschinger, Tim ORCID: 0000-0003-1319-6949, Mueller, Lars Peter, Hackl, Michael ORCID: 0000-0002-6183-5621, Scaal, Martin, Schmidt-Horlohe, Kay and Wegmann, Kilian (2017). Concomitant injury of the annular ligament in fractures of the coronoid process and the supinator crest. J. Shoulder Elbow Surg., 26 (4). S. 604 - 611. NEW YORK: MOSBY-ELSEVIER. ISSN 1058-2746

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Abstract

Background: Fractures of the coronoid process or the supinator crest, as well as arthroscopic resection of osteophytes around the coronoid process, can endanger the attachment of the annular ligament (AL) to the proximal ulna. The purpose of this study was to investigate the corresponding insertional areas of the AL within this context. Methods: In 30 embalmed human cadaveric elbow specimens, the insertional area of the AL at the anterior and posterior margin of the sigmoid notch was characterized. The distances and relations of the AL insertion anteriorly to the coronoid surface, the coronoid tip, and the depth of the coronoid process, as well as posteriorly to the supinator crest, were evaluated macroscopically. Results: The mean distance of the anterior insertion area was 1.9 +/- 0.6 mm (range, 1.0-3.1 mm) to the coronoid articular surface and 6.2 +/- 1.7 mm (range, 2.9-10.2 mm) to the tip of the coronoid. The distance of the anterior insertion in relation to the depth of the coronoid process was 44% +/- 11% (range, 30%-69%). The distance of the posterior insertion area to the level of the sigmoid notch measured from 3.5 +/- 1.5 mm (range, 0.5-6.5 mm) to 17.7 +/- 2.9 mm (range, 13.1-25.4 mm). Conclusions: Coronoid fractures involving 44% or more of the coronoid process and anterolaterally oriented fractures where one-third of the anterolateral facet is affected are accompanied by a complete anterior bony disruption of the AL. Arthroscopic resection of the coronoid tip should be limited to 1 mm distal to the coronoid articular surface to avoid injury to the AL. Fractures of the upper half of the supinator crest place the AL at risk at its posterior insertion.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Leschinger, Tim UNSPECIFIED orcid.org/0000-0003-1319-6949 UNSPECIFIED Mueller, Lars Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Hackl, Michael UNSPECIFIED orcid.org/0000-0002-6183-5621 UNSPECIFIED Scaal, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Schmidt-Horlohe, Kay UNSPECIFIED UNSPECIFIED UNSPECIFIED Wegmann, Kilian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-234543
DOI:	10.1016/j.jse.2016.09.029
Journal or Publication Title:	J. Shoulder Elbow Surg.
Volume:	26
Number:	4
Page Range:	S. 604 - 611
Date:	2017
Publisher:	MOSBY-ELSEVIER
Place of Publication:	NEW YORK
ISSN:	1058-2746
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language POSTEROLATERAL ROTATORY INSTABILITY; LATERAL COLLATERAL LIGAMENT; RADIAL HEAD; ELBOW; ULNA; STABILIZERS; ANATOMY Multiple languages Orthopedics; Sport Sciences; Surgery Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/23454