Posterior Semicircular Canal Dehiscence: A Histopathologic Human Temporal Bone Study.

08:01 EDT 24th October 2014 | BioPortfolio

Summary of "Posterior Semicircular Canal Dehiscence: A Histopathologic Human Temporal Bone Study."


BACKGROUND:
: Posterior semicircular canal dehiscence has been shown to cause ear symptoms.
OBJECTIVE:
: To evaluate the incidence of dehiscence of the posterior semicircular canal, thin bone overlying the posterior semicircular canal, and the normal development of the distance between the posterior semicircular canal and posterior cranial fossa.
METHODS:
: The shortest distance between the posterior semicircular canal and posterior cranial fossa was measured in 1,051 adult human temporal bones (557 cases), and temporal bones with a distance less than 0.1 mm were evaluated. The shortest distance also was measured in 4 fetal temporal bones (2 cases) and 110 temporal bones from children.
RESULTS:
: Of the 1,051 temporal bones, 23 temporal bones (2.2%) had a distance less than 0.1 mm between the posterior semicircular canal and posterior cranial fossa. Two temporal bones (0.2%) had posterior semicircular canal dehiscence, and 2 temporal bones had microfractures in the thin bone; however, related clinical symptoms were not confirmed. In children, the distance between the posterior semicircular canal and the posterior cranial fossa increased with age (rho = 0.68, p < 0.01).
CONCLUSION:
: The histopathologic incidence of posterior semicircular canal dehiscence was lower than the previous radiographic reports. The dehiscence of the posterior semicircular canal may be due to a developmental anomaly. In our study, none of the cases with a distance less than 0.1 mm had apparent symptoms related to canal dehiscence syndrome. Other factors, in addition to thinning of the bone, may be required to cause the clinical manifestations.

Affiliation

*Department of Otolaryngology, University of Minnesota, Minneapolis, Minnesota, U.S.A.; daggerDepartment of Otolaryngology-Head and Neck Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan; double

Journal Details

This article was published in the following journal.

Name: Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Aca
ISSN: 1537-4505
Pages:

Links

PubMed Articles [18383 Associated PubMed Articles listed on BioPortfolio]

Pressure Assessment of Superior Semicircular Canal Dehiscence Repair Techniques-A Temporal Bone Study.

To develop a cadaveric temporal bone preparation to compare the strength of superior semicircular canal dehiscence (SCD) repair techniques.

Can lateral semicircular canal dysplasia play a role in the genesis of hyperacusis.

Hyperacusis can be a prominent and disabling symptom of superior semicircular canal dehiscence associated with autophony and the Tullio phenomenon. We report three clinical cases characterized by disa...

Surgical Treatment of Hearing Loss When Otosclerosis Coexists With Superior Semicircular Canal Dehiscence Syndrome.

Document a case of bilateral otosclerosis with coexisting bilateral superior semicircular canal dehiscence syndrome and the treatment of hearing loss in this setting.

Use of cone beam computed tomography in the diagnosis of superior semicircular canal dehiscence.

Superior semicircular canal dehiscence is a relatively new syndrome in the field of otology. It is of unknown etiology presenting with a variety of vestibular and auditory symptoms and radiologic find...

Superior Canal Dehiscence Length and Location Influences Clinical Presentation and Audiometric and Cervical Vestibular-Evoked Myogenic Potential Testing.

Superior canal dehiscence (SCD) is caused by an absence of bony covering of the arcuate eminence or posteromedial aspect of the superior semicircular canal. However, the clinical presentation of SCD s...

Clinical Trials [3110 Associated Clinical Trials listed on BioPortfolio]

Comparison of a PEG Membrane and a Collagen Membrane for the Treatment of Bone Dehiscence Defects at Bone Level Implants

The aim of the study is to test in a randomised comparative study the per-formance of Straumann® MembraGel (PEG Membrane) to act as a barrier for guided bone regeneration compared to that...

Vestibular Evoked Myogenic Potentials in Benign Paroxysmal Positional Vertigo (VEMP in BPPV)

Benign Paroxysmal Positional Vertigo (BPPV) is the most frequent cause of vertigo of peripheral vestibular origin with life time incidence of 2.4%. BPPV is characterized by bouts of acute ...

Diagnostic Study of Temporal Arteritis

Despite a large and growing body of knowledge concerning the diagnosis of temporal arteritis, this potentially crippling disease still requires pathological diagnosis in practically every ...

Autologous Bone Marrow Stem Cells Transplantation in Patients With Temporal Lobe Epilepsy

This research investigates the use of autologous bone marrow stem cells for the treatment of medically refractory temporal lobe epilepsy patients.

Radiosurgery or Open Surgery for Epilepsy Trial

This study will compare radiosurgery (focused radiation, Gamma Knife Radiosurgery) with temporal lobectomy (standard surgical care) as a treatment of temporal lobe epilepsy. Patients who h...

Medical and Biotech [MESH] Definitions

The compartment containing the anterior extremities and half the inferior surface of the temporal lobes (TEMPORAL LOBE) of the cerebral hemispheres. Lying posterior and inferior to the anterior cranial fossa (CRANIAL FOSSA, ANTERIOR), it is formed by part of the TEMPORAL BONE and SPHENOID BONE. It is separated from the posterior cranial fossa (CRANIAL FOSSA, POSTERIOR) by crests formed by the superior borders of the petrous parts of the temporal bones.

The infratentorial compartment that contains the CEREBELLUM and BRAIN STEM. It is formed by the posterior third of the superior surface of the body of the sphenoid (SPHENOID BONE), by the occipital, the petrous, and mastoid portions of the TEMPORAL BONE, and the posterior inferior angle of the PARIETAL BONE.

A small bony canal linking the vestibule of the inner ear to the posterior part of the internal surface of the petrous TEMPORAL BONE. It transmits the endolymphatic duct and two small blood vessels.

Three long canals (anterior, posterior, and lateral) of the bony labyrinth. They are set at right angles to each other and are situated posterosuperior to the vestibule of the bony labyrinth (VESTIBULAR LABYRINTH). The semicircular canals have five openings into the vestibule with one shared by the anterior and the posterior canals. Within the canals are the SEMICIRCULAR DUCTS.

The posterior part of the temporal bone. It is a projection of the petrous bone.

Search BioPortfolio:
Loading
Advertisement

Relevant Topic

Orthopedics
Latest News Clinical Trials Research Drugs Reports Corporate
Orthopedics is the science or practice of correcting deformities caused by disease or damage to the bones and joints of the skeleton. This specialized branch of surgery may involve operation, manipulation, traction or prostheses. (Oxford Medical Dictiona...

Advertisement