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Related Concept Videos

Deformations in a Symmetric Member in Bending01:18

Deformations in a Symmetric Member in Bending

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When analyzing the deformation of a symmetric prismatic member subjected to bending by equal and opposite couples, it becomes clear that as the member bends, the originally straight lines on its wider faces curve into circular arcs, with a constant radius centered at a point known as Point C. This phenomenon helps to understand the stress and strain distribution within the member more clearly.
When the member is segmented into tiny cubic elements, it is observed that the primary stress...
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Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

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When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
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Plastic Deformations01:19

Plastic Deformations

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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
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Deformations in a Transverse Cross Section01:21

Deformations in a Transverse Cross Section

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When a material is subjected to uniaxial stress, it elongates or contracts in the direction of the applied force, and also undergoes changes in the perpendicular directions. This behavior is crucial for understanding how materials behave under stress and is governed by mechanical properties such as Poisson's ratio v, which measures the ratio of transverse strain to axial strain.
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...
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Muscles for Facial Expressions01:14

Muscles for Facial Expressions

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The craniofacial muscles are a collection of approximately 20 thin skeletal muscles situated beneath the skin of the face and scalp. These muscles, primarily responsible for the vast array of human facial expressions, originate from the bones or fibrous structures of the skull and extend outwards to connect with the skin. While most skeletal muscles in the body are enveloped in thick fascia, facial muscles generally have a more delicate fascial covering, with the buccinator muscle being a...
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Deformity, etiology, solution, sequence (DESS): Facial analysis in rhinoplasty.

Anna Frants1, Antonios N Varelas1, Alexa M Franco1

  • 1Division of Facial Plastic and Reconstructive Surgery, Department of Otolaryngology-Head and Neck Surgery, New York University Grossman School of Medicine, New York, NY, USA.

American Journal of Otolaryngology
|November 12, 2023
PubMed
Summary
This summary is machine-generated.

The DESS (Deformity, Etiology, Solution, Sequence) educational format significantly improved resident comfort and skills in rhinoplasty surgical planning. This systematic approach enhances pre-operative evaluation and intraoperative strategy development for aspiring facial plastic surgeons.

Keywords:
Facial analysisResident educationRhinoplastySurgical planning

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Area of Science:

  • Plastic Surgery Education
  • Surgical Training Methodologies
  • Otolaryngology Residency Programs

Background:

  • Rhinoplasty is a complex surgical procedure requiring extensive training.
  • Residents often face limited exposure and lack standardized methods for rhinoplasty planning during residency.
  • A need exists for structured educational tools to improve resident proficiency in rhinoplasty.

Purpose of the Study:

  • To introduce and evaluate a novel educational format, the DESS (Deformity, Etiology, Solution, Sequence) method.
  • To assess the impact of the DESS format on resident comfort with surgical evaluation and planning for rhinoplasty.
  • To enhance pre-operative assessment and intraoperative planning skills among otolaryngology residents.

Main Methods:

  • A qualitative study was conducted at a tertiary academic institution.
  • Three consecutive otolaryngology residency classes participated.
  • A 9-item questionnaire assessed resident comfort levels before and after utilizing the DESS format during their facial plastics rotation.

Main Results:

  • Ten out of twelve surveyed residents responded, reporting significant improvements.
  • Residents showed enhanced comfort in facial nasal analysis, deformity identification, and surgical planning.
  • The DESS method was highly rated, with residents attributing success to its systematic educational approach (average score 4.8/5.0).

Conclusions:

  • Systematic approaches are crucial for teaching and mastering the art of rhinoplasty.
  • The DESS methodology significantly improves resident comfort in facial nasal analysis and surgical preparation.
  • This novel educational format provides a vital framework for resident training in rhinoplasty.