Verification, validation and sensitivity studies in computational biomechanics

Abstract

Computational techniques and software for the analysis of problems in mechanics have naturally moved from their origins in the traditional engineering disciplines to the study of cell, tissue and organ biomechanics. Increasingly complex models have been developed to describe and predict the mechanical behavior of such biological systems. While the availability of advanced computational tools has led to exciting research advances in the field, the utility of these models is often the subject of criticism due to inadequate model verification and validation (V&V). The objective of this review is to present the concepts of verification, validation and sensitivity studies with regard to the construction, analysis and interpretation of models in computational biomechanics. Specific examples from the field are discussed. It is hoped that this review will serve as a guide to the use of V&V principles in the field of computational biomechanics, thereby improving the peer acceptance of studies that use computational modeling techniques.

Keywords:

• Verification
• Validation
• Sensitivity studies
• Computational modeling
• Biomechanics
• Review

Acknowledgements

Financial support from NIH grants R01-AR047369, R01-AR050218, R01-HL077683, NSF grant BES-0134503, DARPA Contract W81XWH-04-2-0012 and the Orthopaedic Research and Education Foundation (#2207083) is gratefully acknowledged.