Universität zu Köln

Hackl, Michael ORCID: 0000-0002-6183-5621, Mayer, Katharina, Weber, Mareike, Staat, Manfred ORCID: 0000-0003-4363-6570, van Riet, Roger, Burkhart, Klaus Josef, Mueller, Lars Peter and Wegmann, Kilian (2017). Plate Osteosynthesis of Proximal Ulna Fractures-A Biomechanical Micromotion Analysis. J. Hand Surg.-Am. Vol., 42 (10). PHILADELPHIA: W B SAUNDERS CO-ELSEVIER INC. ISSN 1531-6564

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Abstract

Purpose Double plating has been promoted, in recent years, as an alternative treatment method for proximal ulna fractures. This study aimed to compare the biomechanical properties of double-plate osteosynthesis with posterior plate fixation using a novel investigational design utilizing a 3-dimensional camera system to analyze fracture micromotion. Methods Fourteen fresh-frozen specimens were available for this study. Mayo type IIA fractures of the olecranon were created and internal fixation was performed with either an angular stable posterior plate or angular stable double plates. Fracture micromotion was evaluated by means of digital image correlation with a 3-dimensional camera system before and after dynamic cyclic loading from 15 degrees to 90 degrees of elbow flexion with a pulling force of 25 N to 80 N. Results Micromotion of fragments was less pronounced in double-plate osteosynthesis when compared with single plates before and after cyclic loading. However, overall results were similar. Two of the single plates failed during cyclic loading but therewere no failures in the double plates. Conclusions This biomechanical analysis shows that single and double plating results in comparable stability of fixation. Although the double-plating technique tends to provide more stable fixation, relevant differences were not observed. Clinical relevance Double plating potentially represents an efficient option for fixation of proximal ulna fractures. It could decrease the risk of soft tissue complications owing to their low profile and the superior soft tissue coverage. (Copyright (C) 2017 by the American Society for Surgery of the Hand. All rights reserved.)

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Hackl, Michael UNSPECIFIED orcid.org/0000-0002-6183-5621 UNSPECIFIED Mayer, Katharina UNSPECIFIED UNSPECIFIED UNSPECIFIED Weber, Mareike UNSPECIFIED UNSPECIFIED UNSPECIFIED Staat, Manfred UNSPECIFIED orcid.org/0000-0003-4363-6570 UNSPECIFIED van Riet, Roger UNSPECIFIED UNSPECIFIED UNSPECIFIED Burkhart, Klaus Josef UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller, Lars Peter UNSPECIFIED UNSPECIFIED UNSPECIFIED Wegmann, Kilian UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-214655
DOI:	10.1016/j.jhsa.2017.05.014
Journal or Publication Title:	J. Hand Surg.-Am. Vol.
Volume:	42
Number:	10
Date:	2017
Publisher:	W B SAUNDERS CO-ELSEVIER INC
Place of Publication:	PHILADELPHIA
ISSN:	1531-6564
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DISPLACED OLECRANON FRACTURES; COMMINUTED FRACTURES; DISTAL HUMERUS; FIXATION; MANAGEMENT; ANATOMY; SYSTEM Multiple languages Orthopedics; Surgery Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/21465