Laser shaping of composite cartilage grafts

Helidonis, Emmanuel S.; Sobol, Emil N.; Kavvalos, George; Bizakis, John G.; Christodoulou, Panayiotis; Velegrakis, George A.; Segas, John; Баграташвили, В. Н.

doi:10.1016/0196-0709(93)90115-n

Cited by 111 publications

(99 citation statements)

References 2 publications

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“…Our results con®rm previous studies [5,10,26], which demonstrated the effectiveness of using laser energy to accelerate stress relaxation in cartilage and reshape grafts. However, in contrast to previous studies that focused on mechanical properties, we measured the shape change accompanying laser-mediated cartilage reshaping and observed signi®cant shape retention.…”

Section: Discussionsupporting

confidence: 81%

Shape retention in porcine‐septal cartilage following Nd:YAG (λ = 1.32 μm) laser‐mediated reshaping

2001

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Section: Discussionsupporting

confidence: 81%

Shape retention in porcine‐septal cartilage following Nd:YAG (λ = 1.32 μm) laser‐mediated reshaping

2001

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“…Although ablation of cartilaginous tissue has been documented by various investigators (Vangsness and Chaden, 1993), our team pioneered the first successful demonstration of laser-assisted cartilage reshaping (Helidonis et al, 1993;. Additionally, we identified the primary biophysical process~The phenoDlenon of stress relaxation and reshaping of cartilage under laser radiation is described in papers by Helidonis et aL (1994), Sobol (1995) and Sobol et al (1994Sobol et al ( t 1996a.…”

Section: Introductionmentioning

confidence: 98%

Laser Reshaping of Cartilage

Sobol

Sviridov

Omelchenko

et al. 2000

Biotechnology and Genetic Engineering Reviews

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107

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“…Two prominent methods, laser and radiofrequency reshaping, rely on heat generation within the tissue to facilitate shape change [3][4][5][6]. While the effectiveness of thermally induced shape change has been extensively verified, the heat generation that creates shape change comes at the expense of chondrocyte viability within the tissue.…”

Section: Introductionmentioning

confidence: 99%

Changes in the Tangent Modulus of Rabbit Septal and Auricular Cartilage Following Electromechanical Reshaping

Lim

Protsenko

Wong

2011

Journal of Biomechanical Engineering

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Transforming decades' old methodology, electromechanical reshaping (EMR) may someday replace traditionally destructive surgical techniques with a less invasive means of cartilage reshaping for reconstructive and esthetic facial surgery. Electromechanical reshaping is essentially accomplished through the application of voltage to a mechanically deformed cartilage specimen. While the capacity of the method for effective reshaping has been consistently shown, its associated effects on cartilage mechanical properties are not fully comprehended. To begin to explore the mechanical effect of EMR on cartilage, the tangent moduli of EMR-treated rabbit septal and auricular cartilage were calculated and compared to matched control values. Between the two main EMR parameters, voltage and application time, the former was varied from 2-8 V and the latter held constant at 2 min for septal cartilage, 3 min for auricular cartilage. Flat platinum electrodes were used to apply voltage, maintaining the flatness of the specimens for more precise mechanical testing through a uniaxial tension test of constant strain rate 0.01 mm/s. Above 2 V, both septal and auricular cartilage demonstrated a slight reduction in stiffness, quantified by the tangent modulus. A thermal effect was observed above 5 V, a newly identified EMR application threshold to avoid the dangers associated with thermoforming cartilage. Optimizing EMR application parameters and understanding various side effects bridge the gap between EMR laboratory research and clinical use, and the knowledge acquired through this mechanical study may be one additional support for that bridge.

show abstract

Laser shaping of composite cartilage grafts

Cited by 111 publications

References 2 publications

Shape retention in porcine‐septal cartilage following Nd:YAG (λ = 1.32 μm) laser‐mediated reshaping

Shape retention in porcine‐septal cartilage following Nd:YAG (λ = 1.32 μm) laser‐mediated reshaping

Laser Reshaping of Cartilage

Changes in the Tangent Modulus of Rabbit Septal and Auricular Cartilage Following Electromechanical Reshaping

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