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Related Concept Videos

Muscles for Facial Expressions01:14

Muscles for Facial Expressions

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...
Facial Feedback Hypothesis01:24

Facial Feedback Hypothesis

Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role of...
Mechanism of Ciliary Motion01:05

Mechanism of Ciliary Motion

The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
Mechanism of Ciliary Motion01:05

Mechanism of Ciliary Motion

The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
Cell Migration01:19

Cell Migration

Cell migration is a process by which the cells move from one location to another, playing an essential role in embryological development, repair and regeneration, immune response, and metastasis. Cells migrate in response to chemical or mechanical signals generated by specific organs or tissues. The overall mechanism includes three steps - polarization, protrusion, and release. Polarization involves the formation of a distinct cell front and rear, which determines the direction of movement.
Cell Migration01:09

Cell Migration

Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms throughout their life. When cells are not able to migrate properly to their ordained locations, various disorders may occur. For example, disruption in cell migration causes chronic inflammatory diseases such as arthritis.

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Related Experiment Video

Updated: Jun 22, 2026

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
19:53

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer

Published on: March 1, 2015

'Optimum mobility' facelift. Part 1 - the theory.

Nabil Fanous1

  • 1Department of Otolaryngology, Head and Neck Surgery, McGill University, Montreal, Quebec.

The Canadian Journal of Plastic Surgery = Journal Canadien De Chirurgie Plastique
|June 26, 2009
PubMed
Summary

Facial tissue mobility, not just dissection plane, is key to successful rhytidectomy (facelift). This study introduces theories on intrinsic, induced, and optimum mobility for better facelift planning and outcomes.

Keywords:
FaceliftOptimum mobilityrhytidectomy

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Treatment of Facial Deformities using 3D Planning and Printing of Patient-Specific Implants

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Last Updated: Jun 22, 2026

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
19:53

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer

Published on: March 1, 2015

Treatment of Facial Deformities using 3D Planning and Printing of Patient-Specific Implants
07:11

Treatment of Facial Deformities using 3D Planning and Printing of Patient-Specific Implants

Published on: May 23, 2020

Area of Science:

  • Plastic Surgery
  • Facial Anatomy
  • Surgical Techniques

Background:

  • Rhytidectomy techniques vary mainly by dissection plane.
  • Complete tissue mobilization is often deemed essential for satisfactory facelift results.

Purpose of the Study:

  • To question the sole reliance on dissection plane and tissue mobilization in rhytidectomy.
  • To introduce and analyze facial tissue mobility as a crucial factor in facelift surgery.

Main Methods:

  • Discussion of traditional rhytidectomy planes.
  • Analysis of facial tissue mobility.
  • Development of three theories: intrinsic mobility, surgically induced mobility, and optimum mobility points.

Main Results:

  • Facial tissue mobility is proposed as a critical element in rhytidectomy planning.
  • Three theories of facial tissue mobility have been developed.
  • These theories form the basis for a new 'optimum mobility' facelift technique.

Conclusions:

  • Facial tissue mobility significantly influences rhytidectomy outcomes.
  • The 'optimum mobility' facelift technique leverages these mobility concepts for improved results.
  • A novel approach to facelift surgery focusing on tissue mobility is presented.