TY  - JOUR
AB  - 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.
AU  - Wähnert, Dirk
AU  - Wähnert, D.
AU  - Hofmann-Fliri, Ladina
AU  - Richards, R. Geoff
AU  - Gueorguiev, Boyko
AU  - Raschke, Michael J.
AU  - Windolf, Markus
DA  - 2014-11
DO  - doi:10.1097/MD.0000000000000166
LA  - eng
N1  - Medicine 93 (2014) 23, 1-6, p e166
N1  - Finanziert durch den Open-Access-Publikationsfonds 2014/2015 der Deutschen Forschungsgemeinschaft (DFG) und der Westfälischen Wilhelms-Universität Münster (WWU Münster).
PY  - 2014-11
SN  - 0025-7974
TI  - Implant augmentation: Adding bone cement to improve the treatment of osteoporotic distal femur fractures: A biomechanical study using human cadaver bones
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:6-00399450675
Y2  - 2024-11-24T20:35:19
ER  -