Related Experiment Video
Updated: Feb 13, 2026
05:04
Facial Nerve Surgery in the Rat Model to Study Axonal Inhibition and Regeneration
Published on: May 5, 2020
8.1K
Anomalous Extratemporal Facial Nerve in Oculoauriculovertebral Spectrum
Linden K Head1,2, Lisa Xuan1,2, Kirsty U Boyd1,2
11 Division of Plastic and Reconstructive Surgery, Department of Surgery, University of Ottawa, Ontario, Canada.
Summary
Facial nerve anomalies are common in oculoauriculovertebral spectrum (OAVS). Early recognition and primary nerve repair can restore near-complete function in cases of iatrogenic facial nerve injury.
Area of Science:
- Plastic Surgery
- Neurology
- Otolaryngology
Background:
- Oculoauriculovertebral spectrum (OAVS) frequently involves facial nerve dysfunction.
- The precise anatomical course of the facial nerve in OAVS patients is not well-documented.
- Surgical interventions for OAVS, such as microtic ear remnant excision, carry risks of iatrogenic injury.
Observation:
- A case study involving a 23-year-old woman with OAVS is presented.
- The patient experienced iatrogenic transection of the facial nerve during microtic ear remnant excision.
- The facial nerve's pes anserinus was located subcutaneously, 15 mm posterior and cephalad to the external acoustic meatus.
Findings:
- Primary nerve repair was performed following the iatrogenic transection.
- The patient achieved nearly complete restoration of preoperative facial nerve function post-repair.
- This case highlights the potential for anomalous facial nerve anatomy in OAVS.
Implications:
- Clinicians must maintain a high index of suspicion for aberrant facial nerve pathways in OAVS patients.
- Awareness of potential anatomical variations is crucial for preventing surgical complications.
- This underscores the importance of meticulous surgical planning and execution in OAVS reconstructions.
Related Concept Videos
02:37The Electromagnetic Spectrum
65.6K
The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
65.6K
01:24The Electromagnetic Spectrum
33.9K
Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
33.9K
01:19IR Spectrum
2.3K
When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0%...
Transmittance is defined as the ratio of the radiant power passing through a sample to that from the radiation's source. Multiplying the transmittance by 100 gives the percent transmittance (%T), which varies between 100% (no absorption) and 0%...
2.3K
01:14Muscles for Facial Expressions
5.0K
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...
5.0K
01:23Mass Spectrum
4.9K
A mass spectrum is the graphical representation of the relative abundance of the charged fragments in an analyte plotted against their mass-to-charge ratio (m/z). The plot's x-axis represents the ratio of the mass of the charged fragment to the number of charges it carries. The y axis of the plot represents the relative abundance of each charged species. The relative abundance is calculated from the signal intensity of each charged species recorded at the detector. The most intense signal (the...
4.9K
01:24Facial Feedback Hypothesis
686
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...
686