microvascular decompression

(redirected from Jannetta procedure)

microvascular decompression

A procedure for reducing cranial nerve compression by vessels within the cranial cavity.
 
Indications
Hemifacial spasm, glossopharyngeal neuralgia, trigeminal neuralgia.

Method
A corridor is cut along the petrous temporal bone and arachnoid around the neurovascular structures to reduce cranial nerve pressure; arteries and some veins are rerouted with stents, while minor compressive veins are electrocauterised. It may be useful for managing trigeminal neuralgia.

microvascular decompression

Corridor procedure Neurosurgery
A procedure for cranial rhizopathies, to ↓ pressure on nerves compressed by vessels in a confined space–eg, in the cranial cavity Indications Hemifacial spasm, glossopharyngeal neuralgia, trigeminal neuralgia
References in periodicals archive ?
Of the 132 patients, the most common medical conditions leading to the use of dural grafts were tumor (60 patients, 45%), brain hemorrhage (21, 16%), Jannetta procedure for facial palsy (18, 14%) and for trigeminal neuralgia (seven, 5%), and intracranial aneurysm (nine, 7%).
Medical conditions leading to the use of dural grafts in these patients included tumor (n = 46), brain hemorrhage (n = 14), Jannetta procedure for facial palsy (n = 13) and for trigeminal neuralgia (n = six), intracranial aneurysm (n = eight), unspecified anomalies (n = five), hematoma (n = three), injury (n = one), and ossification of the spinal posterior longitudinal ligament (n = one).