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Mechanical analyses of critical surgical maneuvers in the correction of cleft lip nasal deformity.

ABSTRACT: The relapse of nasal deformity is a challenge for modern correction of cleft lip. A comprehensive understanding in the biomechanical perspective of both the formation and correction of the cleft lip nasal deformity would lead to improved stability of the corrective outcome. In this study, a finite element model of secondary cleft lip nasal deformity was constructed, on which two critical corrective maneuvers were mimicked in the form of force-loading. The intercrural suture was simulated by a force loaded at the intermediate crus of the alar cartilage directing anteriorly and medially, and the suture suspending the alar cartilage to the upper lateral cartilage was simulated by a force loaded at the lateral crus directing superiorly and medially. The equivalent von-mises stress and the total deformation consequent to different patterns of loading were captured. Our biomechanical analyses suggested that the intercrural suture at the nasal tip might be more effective in generating widespread morphological change than the suspension suture, but left much higher level of stress within the skin envelope if placed too high. Synergistic effect was observed between the two sutures in both the resultant deformation and stress. In addition, our simulations were partially supported by clinical photogrammetry data.

SUBMITTER: Huang H

PROVIDER: S-EPMC5898757 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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Mechanical analyses of critical surgical maneuvers in the correction of cleft lip nasal deformity.

Huang Hanyao H Li Yeping Y Luo Xiangyou X Cheng Xu X Shi Bing B Li Jingtao J

PloS one 20180413 4

The relapse of nasal deformity is a challenge for modern correction of cleft lip. A comprehensive understanding in the biomechanical perspective of both the formation and correction of the cleft lip nasal deformity would lead to improved stability of the corrective outcome. In this study, a finite element model of secondary cleft lip nasal deformity was constructed, on which two critical corrective maneuvers were mimicked in the form of force-loading. The intercrural suture was simulated by a fo ...[more]

PMID: 29652906

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Project description:Patients who undergo corrective surgery for cleft lip are known to be at risk for subsequently developing secondary nasal deformity. The aim of this study was to investigate the effects of Y-shaped conchal cartilage transplantation on the correction of nasal deformity secondary to cleft lip and its influence on mental health. Sixteen patients with nasal deformity secondary to cleft lip admitted to The First People's Hospital Xuzhou (Xuzhou, China) from February 2014 to February 2015 were selected for the study. Conchal cartilage was taken from the patients and made into a Y-shaped stent, which was then transplanted into the nasal columella. The surgical outcomes and patient satisfaction were evaluated and HADS was used to compare the preoperative and postoperative mental health. After the affected side of the nose was corrected, the nasal profiles of 12 patients were significantly improved, the height of nasal columella and nostril was significantly increased, the nasal base and breadth were significantly shorter than those before operation and the nose wing-nasal breadth index on the affected side was significantly increased compared to that before operation and the differences were statistically significant (P<0.05). The satisfaction of each index after the operation was more than 90%. The mental health of patients after operation was notably improved compared to before operation and the difference was statistically significant (P<0.05). After the correction of secondary nasal deformity to cleft lip through Y-shaped conchal cartilage transplantation, the shape of the nasal tip was stable without the recurrence of deformities or distortion on the donor site of the auricle. Y-shaped conchal cartilage transplantation is an ideal treatment method for the moderate and severe secondary nasal deformity to cleft lip and effective perioperative mental intervention can improve the patient's mental health status, an outcome that is worth popularizing in clinical applications.

Dataset Information

Mechanical analyses of critical surgical maneuvers in the correction of cleft lip nasal deformity.

Publications

Mechanical analyses of critical surgical maneuvers in the correction of cleft lip nasal deformity.

Similar Datasets

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