The Experts below are selected from a list of 1278 Experts worldwide ranked by ideXlab platform
Andreas Lenich - One of the best experts on this subject based on the ideXlab platform.
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Proximal Radius Fracture morphology following axial force impact a biomechanical evaluation of Fracture patterns
BMC Musculoskeletal Disorders, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures.
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Proximal Radius Fracture morphology following axial force impact: a biomechanical evaluation of Fracture patterns
BMC, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:Abstract Background The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. Methods 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. Results All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. Conclusion The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures
Lucca Lacheta - One of the best experts on this subject based on the ideXlab platform.
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Proximal Radius Fracture morphology following axial force impact a biomechanical evaluation of Fracture patterns
BMC Musculoskeletal Disorders, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures.
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Proximal Radius Fracture morphology following axial force impact: a biomechanical evaluation of Fracture patterns
BMC, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:Abstract Background The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. Methods 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. Results All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. Conclusion The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures
A. Vallejo - One of the best experts on this subject based on the ideXlab platform.
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Design-Optimization and Material Selection for a Proximal Radius Fracture-Fixation Implant
Journal of Materials Engineering and Performance, 2010Co-Authors: Mica Grujicic, A. Grujicic, D. W. Wagner, Guruprasad Arakere, A. VallejoAbstract:The problem of optimal size, shape, and placement of a Proximal Radius-Fracture fixation-plate is addressed computationally using a combined finite-element/design-optimization procedure. To expand the set of physiological loading conditions experienced by the implant during normal everyday activities of the patient, beyond those typically covered by the pre-clinical implant-evaluation testing procedures, the case of a wheel-chair push exertion is considered. Toward that end, a musculoskeletal multi-body inverse-dynamics analysis is carried out of a human propelling a wheelchair. The results obtained are used as input to a finite-element structural analysis for evaluation of the maximum stress and fatigue life of the parametrically defined implant design. While optimizing the design of the Radius-Fracture fixation-plate, realistic functional requirements pertaining to the attainment of the required level of the devise safety factor and longevity/lifecycle were considered. It is argued that the type of analyses employed in the present work should be: (a) used to complement the standard experimental pre-clinical implant-evaluation tests (the tests which normally include a limited number of daily-living physiological loading conditions and which rely on single pass/fail outcomes/decisions with respect to a set of lower-bound implant-performance criteria) and (b) integrated early in the implant design and material/manufacturing-route selection process.
Nicole Fischer - One of the best experts on this subject based on the ideXlab platform.
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Proximal Radius Fracture morphology following axial force impact a biomechanical evaluation of Fracture patterns
BMC Musculoskeletal Disorders, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures.
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Proximal Radius Fracture morphology following axial force impact: a biomechanical evaluation of Fracture patterns
BMC, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:Abstract Background The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. Methods 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. Results All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. Conclusion The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures
Sebastian Siebenlist - One of the best experts on this subject based on the ideXlab platform.
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Proximal Radius Fracture morphology following axial force impact a biomechanical evaluation of Fracture patterns
BMC Musculoskeletal Disorders, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures.
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Proximal Radius Fracture morphology following axial force impact: a biomechanical evaluation of Fracture patterns
BMC, 2019Co-Authors: Lucca Lacheta, Sebastian Siebenlist, Maximillian Lauber, Lukas Willinger, Nicole Fischer, Andreas B Imhoff, Andreas LenichAbstract:Abstract Background The most common location for articular Fractures of the radial head is often reported to be the anterior lateral aspect of the radial head with the arm in neutral position. However, these findings mainly base on clinical observations rather than precise biomechanical measurements. The purpose of this study was to evaluate the formation of Proximal Radius Fractures, the association between axial forces and Fracture morphology, energy to failure and bone stiffness in a biomechanical in-vitro setup. Methods 18 fresh-frozen cadaveric radii performed axial load compression with 10 mm/min loading until bone failure. Energy to failure and bone stiffness were recorded. Proximal radial head Fracture morphology and affection of the anterolateral quadrant were optically analyzed. Results All radii survived a compression load of 500 N. The mean compressive forces that lead to failure were 2,56 kN (range 1,30 – 7,32). The mean stiffness was 3,5 kN/mm (range 2,0 – 4,9). 11 radial neck Fractures and 7 radial neck and radial head multifragment Fractures were documented. The anterolateral quadrant was involved in 78% of tested radii. Conclusion The anterolateral quadrant of the radial head (in neutral position of the forearm) is confirmed to be the most common location for articular radial head Fractures in a biomechanical setting. In case of a fall on the outstretched arm radial neck Fractures should be securely ruled out due to prior occurrence to radial neck and head Fractures
