Optimal bone structure is dependent on the interplay between mechanics and cellular activities
TypeArticles dans des revues avec comité de lecture
Bone is a tissue with the remarkable capacity to adapt its structure to an optimized microstructural form depending on variations in the loading conditions. The remodeling process in bone produces distinct tis- sue distributions such as cortical and trabecular bone but also fibrous and cartilage tissues. Although it has been demonstrated that mechanical factors play a decisive role in the architectural optimization, it may also follow that biological factors have an influence. This interplay between loading and physiology has not been previously reported but is paramount for a proper assessment of bone remodeling out- comes. In this work we present a mechanostat model for bone remodeling which is shown to predict the mechanically driven homeostasis. It is further demonstrated that the steady-state reached is innately de- pendent upon the loading magnitudes and directions. The model was then adjusted to demonstrate the influence of specific biological factors such as cell proliferation, migration and resorption. Furthermore, two scenarios were created to replicate the physiological conditions of two bone disorders –osteoporosis and osteopetrosis –where the results show that there is a significant distinction between the homeostatic structures reached in each case and that the tissue adaptations follow similar trends to those observed in clinical studies.
Showing items related by title, author, creator and subject.
FRAME, Jamie C.; ROHAN, Pierre-Yves; CORTÉ, Laurent; ALLENA, Rachele (Elsevier, 2018)Bone is a tissue with the remarkable capacity to adapt its structure to an optimized microstructural form depending on variations in the loading conditions. The remodeling process in bone produces distinct tissue distributions ...
FRAME, Jamie C.; ROHAN, Pierre-Yves; CORTÉ, Laurent; ALLENA, Rachele (2017)Introduction Improper osseointegration of implants leading to poor mechanical anchoring or embrittlement of neighboring bone is a major concern in orthopedic surgery [1?]. This integration is known to depend on the complex ...
FRAME, Jamie C.; ROHAN, Pierre-Yves; CORTÉ, Laurent; ALLENA, Rachele (Springer Science and Business Media LLC, 2019)Successfully simulating tissue evolution in bone is of significant importance in predicting various biological processes such as bone remodeling, fracture healing and osseointegration of implants. Each of these processes ...
ROHAN, Pierre-Yves; PILLET, Hélène; SKALLI, Wafa; TRNKA, Julien; MANASSERO, Mathieu; VIATEAU, Véronique; CAROUX, Julien; CORTÉ, Laurent (2017)Introduction Rupture of the Anterior Cruciate Ligament (ACL) affects about 1 person over 3000 every year. The current standard care is based on ligament reconstruction by autograft from tendon tissues and is considered as ...
Microstructural characterization of annulus fibrosus by ultrasonography: a feasibility study with an in vivo and in vitro approach LANGLAIS, Tristan; DESPRAIRIES, Pierre; PIETTON, Raphaël; ROHAN, Pierre-Yves; DUBOUSSET, Jean; MEAKIN, Judith R.; WINLOVE, Peter C.; VIALLE, Raphaël; SKALLI, Wafa; VERGARI, Claudio (Springer, 2019)The main function of the intervertebral disc is biomechanical function, since it must resist repetitive high loadings, while giving the spine its flexibility and protecting the spinal cord from over-straining. It partially ...