Universität zu Köln

Trost, Matthias ORCID: 0000-0002-4984-6985, Bredow, Jan, Boese, Christoph Kolja, Loweg, Lennard, Schulte, Tobias Ludger, Scaal, Martin, Eysel, Peer and Oppermann, Johannes (2018). Biomechanical Comparison of Fixation With a Single Screw Versus Two Kirschner Wires in Distal Chevron Osteotomies of the First Metatarsal: A Cadaver Study. J. Foot Ankle Surg., 57 (1). S. 95 - 100. NEW YORK: ELSEVIER SCIENCE INC. ISSN 1542-2224

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Abstract

Distal chevron osteotomy is a common procedure for surgical correction of hallux valgus. Osteosynthesis with 1 screw or 2 Kirschner wires has been commonly used. We compared the stability of the 2 techniques in distal chevron osteotomy. Sixteen first metatarsals from fresh-frozen human cadaver feet (9 different cadaveric specimens) were used. A standardized distal chevron osteotomy was performed. One first metatarsal from each pair was assigned to group 1 (3.5-mm cortical screw; n = 8) and one to group 2 (two 1.6-mm Kirschner wires; n = 8). Using a materials testing machine, the head of the first metatarsals was loaded in 2 different configurations (cantilever and physiologic) in succession. In the cantilever configuration, the relative stiffness of the osteosynthesis compared with intact bone was 59% +/- 27% in group 1 and 68% +/- 18% in group 2 (p = .50). In the physiologic configuration, it was 38% +/- 25% in group 1 and 35% +/- 7% in group 2 (p = .75). The failure strength in the cantilever configuration was 187 +/- 105 N in group 1 and 259 +/- 71 N in group 2 (p = .21). No statistically significant differences were found in stability between the 2 techniques. The use of 1 screw or 2 Kirschner wires had no significant differences in their biomechanical loading capacity for osteosynthesis in distal chevron osteotomies for treatment of hallux valgus. (C) 2017 by the American College of Foot and Ankle Surgeons. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Trost, Matthias UNSPECIFIED orcid.org/0000-0002-4984-6985 UNSPECIFIED Bredow, Jan UNSPECIFIED UNSPECIFIED UNSPECIFIED Boese, Christoph Kolja UNSPECIFIED UNSPECIFIED UNSPECIFIED Loweg, Lennard UNSPECIFIED UNSPECIFIED UNSPECIFIED Schulte, Tobias Ludger UNSPECIFIED UNSPECIFIED UNSPECIFIED Scaal, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Eysel, Peer UNSPECIFIED UNSPECIFIED UNSPECIFIED Oppermann, Johannes UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-204588
DOI:	10.1053/j.jfas.2017.08.014
Journal or Publication Title:	J. Foot Ankle Surg.
Volume:	57
Number:	1
Page Range:	S. 95 - 100
Date:	2018
Publisher:	ELSEVIER SCIENCE INC
Place of Publication:	NEW YORK
ISSN:	1542-2224
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language RANDOMIZED CONTROLLED-TRIAL; SEVERE HALLUX-VALGUS; SOFT-TISSUE RELEASE; SHAFT OSTEOTOMIES; ANKLE ARTHRODESIS; STABILITY Multiple languages Orthopedics; Surgery Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/20458