Finite Element Model Analysis of Cephalic Trim on Nasal Tip Stability

“…Finite element analysis is precise, because the model’s structure is derived from patient-specific clinical CT data. Finite element analysis has been used to model complex nasal mechanics and quantify the relative contributions of the classic major nasal tip support mechanisms, 14–20 shape change in laser-cartilage reshaping, 26 cephalic trim on lower lateral cartilage and nasal tip stability, 16,18 and the impact of caudal septal resection. 14 The linkage between physician assessment and outcomes derived from FEA can be established using this 3-D–printed rapid prototype approach.…”

Section: Discussionmentioning

confidence: 99%

“…18–20 Finite element analysis can provide estimates of short- and long-term steady state outcomes. 18–21 For example, applying FEA to study septal L-strut design illustrated the value in enhanced surgical planning. 21 To our knowledge, no nasal finite element model to date has undergone validation.…”

mentioning

confidence: 99%

Estimation of Nasal Tip Support Using Computer-Aided Design and 3-Dimensional Printed Models

Gray

Maducdoc

Manuel

et al. 2016

JAMA Facial Plast Surg

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“…This parameter was approached by calculating its Woehler diagram via perpendicular impacts tests and appropriate FEM simulation (see Figure 6) [10]. Moreover, in the case of the nasal bone, the failure stress for element deletion was kept constant considering already published results [23][24][25]. In the FEA-model developed, the instrument material was described with piecewise linear plasticity and strain rate independent law (see Figure 5), whereas the nasal bone as an elastic material with failure.…”

Section: The Developed Fea-modelmentioning

confidence: 99%

A FEA-Based Methodology to Predict the Osteotome Wear Status during Nasal Bone Surgical Operations

et al. 2019

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A FEA-based methodology was developed in order to predict the wear status of an osteotome (surgical instrument) during its use in a lateral nasal bone osteotomy considering its fatigue strength. The latter parameter was determined by appropriate FEM-evaluation of the perpendicular impact test results. For the simulation of the surgical procedure, two scenarios were examined: (i) when utilizing a brand new osteotome and (ii) when utilizing an already used osteotome characterized by decreased fatigue strength. The actual nasal bone geometry used in the FEA model was obtained from a high-resolution, maxillofacial, computed tomography (CT) scan of a single patient. In both cases examined, depiction of fracture patterns for the osteotome and the nasal bone were obtained. The wear of a new osteotome and an already used osteotome was also calculated and compared. The developed von Mises stresses in both the osteotome and nasal bone were depicted. The proposed methodology allowed an accurate prediction of the critical number of impacts that the osteotome can receive during the lateral nasal osteotomy which is followed in all rhinoplasties. Based on the developed methodology, a preventive replacement of the osteotome before its extensive fracture can be determined, thereby minimizing the risk of postoperative complications.

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Finite Element Model Analysis of Cephalic Trim on Nasal Tip Stability

Cited by 20 publications

References 21 publications

A Finite Element Model to Simulate Formation of the Inverted-V Deformity

A Finite Element Model to Simulate Formation of the Inverted-V Deformity

Estimation of Nasal Tip Support Using Computer-Aided Design and 3-Dimensional Printed Models

A FEA-Based Methodology to Predict the Osteotome Wear Status during Nasal Bone Surgical Operations

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