Defining Nasal Cartilage Elasticity
Autor: | William Lawson, Richard W. Westreich, Karl J. Jepsen, Hayden William Courtland, Philip Nasser |
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Rok vydání: | 2007 |
Předmět: |
Cantilever
medicine.medical_treatment Nose Models Biological Theory based Biomechanical Phenomena Rhinoplasty otorhinolaryngologic diseases medicine Nasal septum Humans Prospective Studies Elasticity (economics) Nasal cartilages business.industry Cartilage General Medicine Anatomy Elasticity medicine.anatomical_structure Tissue and Organ Harvesting Surgery business Software |
Zdroj: | Archives of Facial Plastic Surgery. 9:264-270 |
ISSN: | 1538-3660 1521-2491 |
DOI: | 10.1001/archfaci.9.4.264 |
Popis: | To define the modulus of elasticity for nasal septum, auricular, upper lateral, and lower lateral cartilages.Prospective enrollment of sequential patients undergoing septorhinoplasty. Test samples were obtained through routine surgical interventions using atraumatic harvesting techniques. The modulus of elasticity was determined using a customized biomechanical testing device. A clinical analysis of nasal tip strength and "ethnic" nasal categorization was performed.Five sequential patients were enrolled; 4 underwent biomechanical testing of harvested cartilage. All 4 patients were classified as having a leptor-rhine nasal architecture. The modulus of elasticity for the lower lateral cartilages was 1.82 to 15.28 MPa. Values for auricular, nasal septum, and upper lateral cartilages (medial and caudal) were also determined.This is the first biomechanical study performed on human auricular, lower lateral, and upper lateral cartilages. The elastic modulus can be determined from samples obtained during routine septorhinoplasty. The modulus of elasticity for all areas was significantly higher than values previously demonstrated for bioengineered elastic cartilage and carved human nasal septal specimens. Shaving the lateral portions of the nasal septum may significantly reduce tensile strength, which may affect graft performance in vivo. Further refinement of testing methods and an increase in the number of analyzed samples are required for formal statistical analysis and further determination of clinical relevance in different nasal subtypes. |
Databáze: | OpenAIRE |
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