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Implant augmentation: Adding bone cement to improve the treatment of osteoporotic distal femur fractures

A biomechanical study using human cadaver bones

The increasing problems in the field of osteoporotic fracture fixation results in specialized implants as well as new operation methods, for example, implant augmentation with bone cement. The aim of this study was to determine the biomechanical impact of augmentation in the treatment of osteoporotic distal femur fractures. Seven pairs of osteoporotic fresh frozen distal femora were randomly assigned to either an augmented or nonaugmented group. In both groups, an Orthopaedic Trauma Association 33 A3 fractures was fixed using the locking compression plate distal femur and cannulated and perforated screws. In the augmented group, additionally, 1 mL of polymethylmethacrylate cement was injected through the screw. Prior to mechanical testing, bone mineral density (BMD) and local bone strength were determined. Mechanical testing was performed by cyclic axial loading (100 N to 750 N + 0.05N/cycle) using a servo-hydraulic testing machine. As a result, the BMD as well as the axial stiffness did not significantly differ between the groups. The number of cycles to failure was significantly higher in the augmented group with the BMD as a significant covariate. In conclusion, cement augmentation can significantly improve implant anchorage in plating of osteoporotic distal femur fractures.

Titel: Implant augmentation: Adding bone cement to improve the treatment of osteoporotic distal femur fractures
Untertitel: A biomechanical study using human cadaver bones
Verfasser: Wähnert, Dirk GND
Hofmann-Fliri, Ladina
Richards, R. Geoff
Gueorguiev, Boyko
Raschke, Michael J.
Windolf, Markus GND
Organisation: FB 05: Medizinische Fakultät
Dokumenttyp: Artikel
Medientyp: Text
Erscheinungsdatum: November 2014
Publikation in MIAMI: 08.01.2015
Datum der letzten Änderung: 27.07.2015
Quelle: Medicine 93 (2014) 23, 1-6, p e166
Fachgebiete: Medizin und Gesundheit
Lizenz: CC BY-ND 4.0
Sprache: Englisch
Anmerkungen: Finanziert durch den Open-Access-Publikationsfonds 2014/2015 der Deutschen Forschungsgemeinschaft (DFG) und der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Format: PDF-Dokument
URN: urn:nbn:de:hbz:6-00399450675
Permalink: https://nbn-resolving.org/urn:nbn:de:hbz:6-00399450675
DOI: doi:10.1097/MD.0000000000000166
ISSN: 0025-7974
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