Universität zu Köln

Gick, S., Oppermann, J., Owerst, I., Pennig, D. and Dargel, J. (2019). Biomechanical comparison of six different fixation techniques for treatment of metacarpal neck fractures. Unfallchirurg, 122 (8). S. 587 - 596. NEW YORK: SPRINGER. ISSN 1433-044X

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Abstract

Purpose The purpose of this study was to evaluate the primary stability of commonly used fixation techniques for metacarpal neck fractures and to compare it with that of an innovative osteosynthesis device: IlluminOss (TM), the photodynamic bone stabilization system (TM). Material and methods Metacarpal neck fractures were created on the second to fifth metacarpal bones of 24 freshly frozen human cadavers using a band saw. Specimens were randomly assigned to one of six groups and treated with (1) K-wire fixation, (2) dorsal plating, (3) external fixation, (4) cross-threaded K-wire fixation, (5) IlluminOss (TM) and (6) locked IlluminOss (TM). In each group 16 specimens each underwent either monocyclic or polycyclic loading protocols. Results During monocyclic loading none of the specimens failed prior to a maximum deformation of 3mm. With intramedullary K-wire fixation the mean loads were significantly lower than those of the other techniques. Mean loads causing 2mm deformation with external fixation were significantly lower than those with dorsal plate osteosynthesis. The mean linear stiffness of the K-wire osteosynthesis was significantly lower than for the other fixation techniques and all methods of external fixation were significantly lower than dorsal plates. There were no significant differences with respect to the linear stiffness between the groups with dorsal plates, fragment fixation system (FFS), IlluminOss (TM) and locked IlluminOss (TM). During polycyclic testing the loss of resistance in dorsal plate osteosynthesis was significantly lower than with K-wire and IlluminOss (TM) fixation. No significant differences in loss of resistance could be shown between dorsal plate osteosynthesis, external fixation, FFS and locked IlluminOss (TM). Conclusion In summary, IlluminOss (TM) can be used as an intramedullary stabilization system for treatment of metacarpal neck fractures. In combination with locking screws the biomechanical characteristics of IlluminOss (TM) are comparable to the other fixation techniques.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Gick, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Oppermann, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Owerst, I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pennig, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dargel, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-145834
DOI:	10.1007/s00113-019-0671-3
Journal or Publication Title:	Unfallchirurg
Volume:	122
Number:	8
Page Range:	S. 587 - 596
Date:	2019
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1433-044X
Language:	German
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SUBCAPITAL FRACTURES; EXTERNAL FIXATION; 5TH METACARPALS; TRANSVERSE; SHAFT; BONE; HAND; REDUCTION; 4TH Multiple languages Emergency Medicine; Surgery Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14583