An in vitro mechanical comparison of tibial plateau levelling osteotomy plates

2009-01-01
Bordelon, J.
Çöker, Demirkan
Payton, M.
Rochat, M.
An in vitro mechanical study was performed to compare the fatigue properties and the loads to failure of four plate designs that are used to stabilise the tibial plateau levelling osteotomy (TPLO). Seventy-two gapped osteotomy models were created using 3.5 mm versions of the following plates: a standard TPLO plate, a low profile TPLO plate, a locking TPLO plate (LocP), and a broad locking TPLO plate (bLocP). The 18 constructs for each plate design were sub-divided into three identical groups of six. Six constructs were mounted in a materials testing device and subjected to cyclic compressive loading until failure was observed or one-million cycles were achieved. Additionally, six constructs of each plate design were tested in compressive axial loading and six others in four-point bending in a load-to-failure manner. To provide residual strength comparisons, the six constructs undergoing cyclic fatigue compression testing were also tested in axial compressive loading. There were not any significant differences in stiffness between plates tested in axial compressive loading. However, mean loads at failure were higher for the LocP and bLocP constructs. The bLocP had a significantly higher mean stiffness and mean load at failure compared to the other constructs tested in four-point bending.
VETERINARY AND COMPARATIVE ORTHOPAEDICS AND TRAUMATOLOGY

Suggestions

An in vivo study on the effect of scaffold geometry and growth factor release on the healing of bone defects
Yilgor, P.; Yilmaz, G.; Onal, M. B.; Solmaz, I.; Gundogdu, S.; Keskil, S.; Sousa, R. A.; Reis, R. L.; Hasırcı, Nesrin; Hasırcı, Vasıf Nejat (2013-09-01)
The hypothesis of this study was that the extent of bone regeneration could be enhanced by using scaffolds with appropriate geometry, and that such an effect could be further increased by mimicking the natural timing of appearance of bone morphogenetic proteins BMP-2 and BMP-7 after fracture. Bioplotted poly(epsilon-caprolactone) (PCL) disks with four different fibre organizations were used to study the effect of 3D scaffold architecture on the healing of bone defects in a rat pelvis model. Moreover, one PC...
Prediction of forming limit curve at fracture for sheet metal using new ductile fracture criterion
Dizaji, Shahram Abbasnejad; Darendeliler, Haluk; KAFTANOĞLU, BİLGİN (Elsevier BV, 2018-05-01)
The application of ductile fracture criteria (DFCs) in numerical analysis of sheet metal forming processes can lead to the accurate determination of the fracture initiation. In this study, a new uncoupled ductile fracture criterion (DFC) has been developed which considers the effects of material parameters on the forming limit curves (FLCs) and can be easily implemented in the finite element codes. Two different constitutive models have been employed with the new DFC in order to evaluate the results obtaine...
Fast cell determination of the DSMC molecules in multi-stage turbo molecular pump design
Sengil, N.; Edis, Fırat Oğuz (Elsevier BV, 2011-06-01)
In this study, an existing 2D parallel DSMC solver is modified, to analyze the multi-stage turbomolecular pumps more efficiently. Generally, molecule movements are traced cell-by-cell in DSMC solvers both in structured and unstructured meshes in order to determine which cell the DSMC molecule is positioned in. These calculations require time consuming trigonometric operations. If a nonrectangular physical domain can be converted into a rectangular computational domain using curvilinear coordinates, then it ...
EXPERIMENTAL INVESTIGATION OF FATIGUE DAMAGE ACCUMULATION IN 1100-AL ALLOY
BILIR, OG (Elsevier BV, 1991-01-01)
The cumulative fatigue damage characteristics of 1100 Al alloy were studied to gain a better understanding of the effects of the loading sequence, the percentage of initial applied load cycles and the stress ratio.
An AM1 study on C-60@C-180 system
Türker, Burhan Lemi; Gumus, S (Elsevier BV, 2004-04-09)
AM1 type (RHF) semi-empirical calculations are performed on endohedrally C-60 doped C-180 structure to examine the electronic and structural properties. The molecule is found to be stable but endothermic in nature.
Citation Formats
J. Bordelon, D. Çöker, M. Payton, and M. Rochat, “An in vitro mechanical comparison of tibial plateau levelling osteotomy plates,” VETERINARY AND COMPARATIVE ORTHOPAEDICS AND TRAUMATOLOGY, pp. 467–472, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56136.