Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures
Gehweiler D, Styger U, Gueorguiev B, Colcuc C, Vordemvenne T, Wähnert D (2022)
Archives of Orthopaedic and Trauma Surgery 142(6): 1055-1061.
Zeitschriftenaufsatz
| Veröffentlicht | Englisch
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Autor*in
Gehweiler, Dominic;
Styger, Ursula;
Gueorguiev, Boyko;
Colcuc, Christian;
Vordemvenne, ThomasUniBi;
Wähnert, DirkUniBi
Einrichtung
Abstract / Bemerkung
Introduction
The aim of this investigation was to better understand the differences in local bone quality at the distal femur and their correlation with biomechanical construct failure, with the intention to identify regions of importance to optimize implant anchorage.
Materials and methods
Seven fresh–frozen female femurs underwent high-resolution peripheral quantitative computed tomography (HR-pQCT) to determine bone mineral density (BMD) within three different regions of interest (distal, intermedium, and proximal) at the distal femur. In addition, local bone quality was assessed by measuring the peak torque necessary to break out the trabecular bone along each separate hole of a locking compression plate (LCP) during its instrumentation. Finally, biomechanical testing was performed using cyclic axial loading until failure in an AO/OTA 33 A3 fracture model.
Results
Local BMD was highest in the distal region. This was confirmed by the measurement of local bone quality using DensiProbe™. The most distal holes represented locations with the highest breakaway torque resistance, with the holes on the posterior side of the plate indicating higher values than those on its anterior side. We demonstrated strong correlation between the cycles to failure and local bone strength (measured with DensiProbe™) in the most distal posterior screw hole, having the highest peak torque.
Conclusion
The local bone quality at the distal femur indicates that in plated distal femur fractures the distal posterior screw holes seem to be the key ones and should be occupied. Measurement of the local bone strength with DensiProbe™ is one possibility to determine the risk of construct failure, therefore, thresholds need to be defined.
Stichworte
Distal femur fracture;
Osteoporosis;
Biomechanics;
Local bone quality;
DensiProbe
Erscheinungsjahr
2022
Zeitschriftentitel
Archives of Orthopaedic and Trauma Surgery
Band
142
Ausgabe
6
Seite(n)
1055-1061
Urheberrecht / Lizenzen
eISSN
1434-3916
Finanzierungs-Informationen
Open-Access-Publikationskosten wurden durch die Universität Bielefeld im Rahmen des DEAL-Vertrags gefördert.
Page URI
https://pub.uni-bielefeld.de/record/2964603
Zitieren
Gehweiler D, Styger U, Gueorguiev B, Colcuc C, Vordemvenne T, Wähnert D. Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures. Archives of Orthopaedic and Trauma Surgery. 2022;142(6):1055-1061.
Gehweiler, D., Styger, U., Gueorguiev, B., Colcuc, C., Vordemvenne, T., & Wähnert, D. (2022). Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures. Archives of Orthopaedic and Trauma Surgery, 142(6), 1055-1061. https://doi.org/10.1007/s00402-021-03782-7
Gehweiler, Dominic, Styger, Ursula, Gueorguiev, Boyko, Colcuc, Christian, Vordemvenne, Thomas, and Wähnert, Dirk. 2022. “Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures”. Archives of Orthopaedic and Trauma Surgery 142 (6): 1055-1061.
Gehweiler, D., Styger, U., Gueorguiev, B., Colcuc, C., Vordemvenne, T., and Wähnert, D. (2022). Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures. Archives of Orthopaedic and Trauma Surgery 142, 1055-1061.
Gehweiler, D., et al., 2022. Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures. Archives of Orthopaedic and Trauma Surgery, 142(6), p 1055-1061.
D. Gehweiler, et al., “Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures”, Archives of Orthopaedic and Trauma Surgery, vol. 142, 2022, pp. 1055-1061.
Gehweiler, D., Styger, U., Gueorguiev, B., Colcuc, C., Vordemvenne, T., Wähnert, D.: Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures. Archives of Orthopaedic and Trauma Surgery. 142, 1055-1061 (2022).
Gehweiler, Dominic, Styger, Ursula, Gueorguiev, Boyko, Colcuc, Christian, Vordemvenne, Thomas, and Wähnert, Dirk. “Local bone quality measure and construct failure prediction: a biomechanical study on distal femur fractures”. Archives of Orthopaedic and Trauma Surgery 142.6 (2022): 1055-1061.
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2022-07-22T12:44:07Z
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