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

Tjoa, Tjoson; Manuel, Cyrus; Leary, Ryan; Harb, Rani; Protsenko, Dmitriy E.; Wong, Brian J. F.

doi:10.1001/jamafacial.2015.1954

Cited by 11 publications

(16 citation statements)

References 36 publications

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“…This study shared the limitations among all theoretical models. The whole finite element analysis was only set in the elastic region [7,11,12], and the forces applied in this study were all based on trial and error, which was responded to the near-reality deformation that was generated on the skin envelope. The loading spot and direction of the force were also decided to base on the description of surgical maneuvers [14][15][16][17].…”

Section: Discussionmentioning

confidence: 99%

“…Early physical simulations illustrated that the cartilages framework was correlated to the shape of the nose, but the mechanisms were not demonstrated specifically [4]. For understanding the biomechanics of rhinoplasty better, finite element analyses have been validated as a rewarding method [5][6][7][8][9][10][11][12][13]. Our recent studies demonstrated the necessary maneuvers in a competent cleft lip rhinoplasty [12], and relapse would occur according to selected surgical techniques [11].…”

Section: Introductionmentioning

confidence: 99%

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Biomechanical analyses of common suspension sutures in primary cleft lip rhinoplasty

et al. 2019

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Background For a better understanding of common suspension sutures during primary cleft lip nasal rhinoplasty, the biomechanical consequences of those sutures need to be demonstrated. Methods A finite element model of the infant specimen was established. The closure of cleft lip and four different specific suspension sutures were simulated by loading different forces on the model: 1. F1 to simulate the suture fastening both medial crura together; 2. F2 to simulate the suture which sewed both medial crura and the non-cleft-side upper lateral cartilage together; 3. F3 to simulate the suture elevating the alar cartilage cranially; 4. F4 to simulate the suture elevating the alar cartilage superiorly. The deformation and stress distribution consequent to each maneuver were analyzed in details. Results The deviation of columella was restored through the closure of cleft lip. Different suspension sutures had different biomechanical effects on the nasal structure. All suspension sutures had the function on elevating the alar cartilage. F2 had no function on restoring the collapse of the nasal tip. The suture which fastened both medial crura together leaded to the lowest stress on the skin envelope. Conclusions Each suspension suture had its characteristics respectively. The simulation suggested that F1, the suture which fastened both medial crura, could be the most potential maneuver for cleft lip rhinoplasty because it can symmetrically restore the shape of the nose without incurring a significant increase in stress.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biomechanical analyses of common suspension sutures in primary cleft lip rhinoplasty

et al. 2019

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“…To elucidate critical information for the biomechanics of the nose several researchers resort to FEM (Finite Element Method) analysis as a powerful modeling tool. Different surgical procedures, in the field of rhinoplasty, can be found in literature [1][2][3][4][5][6]. For instance, Huang et al [1,2] had simulated the surgical correction of cleft lip nasal deformity and the cleft lip rhinoplasty procedure in terms of stresses developed on several parts of the nose.…”

Section: Introductionmentioning

confidence: 99%

“…FEM was also employed for modelling of the nasal septum with a view to facilitating the proper septal realignment and reconstruction [3]. FE analyses (FEA) of certain deformities of nose such as the inverted-V and the support of the nasal tip [4][5][6] were also reported.…”

Section: Introductionmentioning

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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“…Gassner et al 13 developed a rhinomanometric device to calculate nasal tip resilience in cadavers. Other investigators 14–19 have used computational modeling and finite element analysis (FEA) to model nasal tip mechanics and to estimate the relative contributions of the classic nasal tip support mechanisms.…”

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confidence: 99%

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

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Maducdoc

Manuel

et al. 2016

JAMA Facial Plast Surg

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

Cited by 11 publications

References 36 publications

Biomechanical analyses of common suspension sutures in primary cleft lip rhinoplasty

Biomechanical analyses of common suspension sutures in primary cleft lip rhinoplasty

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

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

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