A conceptual framework for computational models of Achilles tendon homeostasis

Area of Science:

• Biomechanics
• Computational Biology
• Tissue Engineering

Background:

• Computational modeling of tendons, particularly the Achilles tendon, lags behind other tissues.
• A key limitation is the lack of comprehensive conceptual and theoretical models for Achilles tendon function.
• Existing models are often piecemeal, focusing on isolated mechanical or biochemical aspects.

Purpose of the Study:

• To present a novel conceptual model for Achilles tendon tissue homeostasis.
• To integrate existing computational models within this new framework.
• To identify areas requiring further development in computational modeling of the Achilles tendon.

Main Methods:

• Review and conceptualization of Achilles tendon structure and function.
• Analysis of collagen fibril damage mechanisms (mechanical loading and biochemical proteases).
• Evaluation of existing computational models in the context of the proposed conceptual framework.

Main Results:

• A new conceptual model for Achilles tendon homeostasis is proposed.
• The model structures existing research and highlights gaps in current computational approaches.
• Identified the need for further theoretical and experimental research.

Conclusions:

• A unified conceptual model is crucial for advancing Achilles tendon computational modeling.
• Reliably predictive multiscale models for Achilles tendon in health and disease require significant further development.
• Addressing tissue homeostasis and damage/repair mechanisms is central to future modeling efforts.