Stresses and deformations of an osteosynthesis plate in a lateral tibia plateau fracture
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Stresses and deformations of an osteosynthesis plate in a lateral tibia plateau fracture. / Münch, Matthias; Barth, Tobias; Studt, Annika; Dehoust, Julius; Seide, Klaus; Hartel, Maximilian; Frosch, Karl-Heinz.
in: BIOMED ENG-BIOMED TE, Jahrgang 67, Nr. 1, 23.02.2022, S. 43-52.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Stresses and deformations of an osteosynthesis plate in a lateral tibia plateau fracture
AU - Münch, Matthias
AU - Barth, Tobias
AU - Studt, Annika
AU - Dehoust, Julius
AU - Seide, Klaus
AU - Hartel, Maximilian
AU - Frosch, Karl-Heinz
N1 - © 2021 Walter de Gruyter GmbH, Berlin/Boston.
PY - 2022/2/23
Y1 - 2022/2/23
N2 - This study has the aim to investigate the strain and stress in an anterolateral locking plate applied for the fixation of a lateral split fracture. To simulate a complex fracture situation, three segments were separated. With a FEM analysis, representative places for strain and stress measurement were determined. A locked osteosynthesis plate was instrumented with strain gauges and tested on a fractured and a non-fractured Saw Bone model. To simulate different loading situations, four different points of force application, from the center of the condyles to a 15 mm posterior position, were used with a medial-lateral load distribution of 60:40. The simulations as well as the biomechanical tests demonstrated that two deformations dominate the load on the plate: a bending into posterior direction and a bulging of the plate head. Shifting the point of application to the posterior direction resulted in increasing maximum stress, from 1.16 to 6.32 MPa (FEM analysis) and from 3.04 to 7.00 MPa (biomechanical study), respectively. Furthermore, the comparison of the non-fractured and fractured models showed an increase in maximum stress by the factor 2.06-2.2 (biomechanical investigation) and 1.5-3.3 (FEM analysis), respectively.
AB - This study has the aim to investigate the strain and stress in an anterolateral locking plate applied for the fixation of a lateral split fracture. To simulate a complex fracture situation, three segments were separated. With a FEM analysis, representative places for strain and stress measurement were determined. A locked osteosynthesis plate was instrumented with strain gauges and tested on a fractured and a non-fractured Saw Bone model. To simulate different loading situations, four different points of force application, from the center of the condyles to a 15 mm posterior position, were used with a medial-lateral load distribution of 60:40. The simulations as well as the biomechanical tests demonstrated that two deformations dominate the load on the plate: a bending into posterior direction and a bulging of the plate head. Shifting the point of application to the posterior direction resulted in increasing maximum stress, from 1.16 to 6.32 MPa (FEM analysis) and from 3.04 to 7.00 MPa (biomechanical study), respectively. Furthermore, the comparison of the non-fractured and fractured models showed an increase in maximum stress by the factor 2.06-2.2 (biomechanical investigation) and 1.5-3.3 (FEM analysis), respectively.
U2 - 10.1515/bmt-2021-0166
DO - 10.1515/bmt-2021-0166
M3 - SCORING: Journal article
C2 - 34995435
VL - 67
SP - 43
EP - 52
JO - BIOMED ENG-BIOMED TE
JF - BIOMED ENG-BIOMED TE
SN - 0013-5585
IS - 1
ER -
