Subject-specific tribo-contact conditions in total knee replacements: a simulation framework across scales

Rothammer B, Wolf A, Winkler A, Schulte-Hubbert F, Bartz M, Wartzack S, Miehling J, Marian M (2023)

Publication Language: English

Publication Type: Journal article

Publication year: 2023

Journal

Biomechanics and Modeling in Mechanobiology Springer Verlag (Germany)

Book Volume: 22

Pages Range: 1395–1410

URI: https://link.springer.com/article/10.1007/s10237-023-01726-1

DOI: 10.1007/s10237-023-01726-1

Open Access Link: https://link.springer.com/article/10.1007/s10237-023-01726-1

Abstract

Fundamental knowledge about in vivo kinematics and contact conditions at the articulating interfaces of total knee replacements are essential for predicting and optimizing their behavior and durability. However, the prevailing motions and contact stresses in total knee replacements cannot be precisely determined using conventional in vivo measurement methods. In silico modeling, in turn, allows for a prediction of the loads, velocities, deformations, stress, and lubrication conditions across the scales during gait. Within the scope of this paper, we therefore combine musculoskeletal modeling with tribo-contact modeling. In the first step, we compute contact forces and sliding velocities by means of inverse dynamics approach and force-dependent kinematic solver based upon experimental gait data, revealing contact forces during healthy/physiological gait of young subjects. In a second step, the derived data are employed as input data for an elastohydrodynamic model based upon the finite element method full-system approach taking into account elastic deformation, the synovial fluid’s hydrodynamics as well as mixed lubrication to predict and discuss the subject-specific pressure and lubrication conditions.

Authors with CRIS profile

Benedict Rothammer Chair of Engineering Design Alexander Wolf Chair of Engineering Design Andreas Winkler Chair of Engineering Design Marcel Bartz Chair of Engineering Design Sandro Wartzack Chair of Engineering Design Jörg Miehling Chair of Engineering Design

Involved external institutions

Pontificia Universidad Católica de Chile

Chile (CL)

How to cite

APA:

Rothammer, B., Wolf, A., Winkler, A., Schulte-Hubbert, F., Bartz, M., Wartzack, S.,... Marian, M. (2023). Subject-specific tribo-contact conditions in total knee replacements: a simulation framework across scales. Biomechanics and Modeling in Mechanobiology, 22, 1395–1410. https://dx.doi.org/10.1007/s10237-023-01726-1

MLA:

Rothammer, Benedict, et al. "Subject-specific tribo-contact conditions in total knee replacements: a simulation framework across scales." Biomechanics and Modeling in Mechanobiology 22 (2023): 1395–1410.

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