Numerical analysis of costal cartilage warping after laser modification

Allen Foulad; Cyrus Manuel; Jinwan Kim; Brian J. F. Wong

doi:10.1117/12.849618

2 March 2010 Numerical analysis of costal cartilage warping after laser modification

Allen Foulad, Cyrus Manuel, Jinwan Kim, Brian J. F. Wong

Proceedings Volume 7548, Photonic Therapeutics and Diagnostics VI; 75482M (2010) https://doi.org/10.1117/12.849618
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

Grafts obtained from peripheral regions of costal cartilage have an inherent tendency to warp over time. Laser irradiation provides a potential method to control the warping process, thus yielding stable grafts for facial reconstructive surgery. In our current study, we propose a simple and well-fitting model that numerically describes the degree of warping of laser irradiated costal cartilage grafts. Using a Nd:YAG laser (λ=1.32μm) at various exposure settings, grafts harvested from the peripheral regions of porcine costal cartilage were irradiated. The resulting graft geometry was objectively fitted to a curve using a quadratic regression model. The coefficient of determination (R²) demonstrated a very strong fit for all grafts modeled. A quadratic regression is simple to perform and results in a single numerical value that appropriately describes the degree of cartilage warping. Our proposed model is valuable in assessing the effect of laser irradiation on the warping process of costal cartilage.

Citation Download Citation

Allen Foulad, Cyrus Manuel, Jinwan Kim, and Brian J. F. Wong "Numerical analysis of costal cartilage warping after laser modification", Proc. SPIE 7548, Photonic Therapeutics and Diagnostics VI, 75482M (2 March 2010); https://doi.org/10.1117/12.849618

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