Microvascular Decompression for Trigeminal Neuralgia

Indications for MVD

Microvascular decompression is considered the technique of choice for patients with minimal comorbidities due to superior long-term outcomes compared to other surgical interventions 2
The American College of Surgeons indicates that MVD is indicated for patients with trigeminal neuralgia who do not respond to or cannot tolerate medical management, particularly first-line medications like carbamazepine or oxcarbazepine 1
MVD is best suited for patients with typical trigeminal neuralgia presentation and evidence of neurovascular compression on imaging 2

High-resolution MRI with 3D heavily T2-weighted sequences and MRA are essential for identifying potential vascular compression of the trigeminal nerve, as recommended by the American College of Radiology 3, 4
Imaging findings correlate well with surgical findings, with congruence rates between 83-100%, according to the American College of Radiology 3
The American College of Radiology suggests that pre- and post-contrast imaging provides optimal visualization of potential lesions 3
Thin-cut high-resolution techniques should be employed to visualize the trigeminal nerve course, as stated by the American College of Radiology 4
Imaging evidence of vascular compression, degree of compression, location of contact, and nerve volume may have prognostic value, according to the American College of Radiology 3

The American College of Surgeons reports that initial success rates are high, with complete pain relief in approximately 75-80% of patients immediately after surgery 2
MVD offers superior long-term outcomes compared to ablative procedures such as radiofrequency thermocoagulation, glycerol rhizotomy, balloon compression, and Gamma Knife radiosurgery, as stated by the American College of Surgeons 1, 2

Common complications include hearing loss, with a risk that varies by study, as reported by the American College of Surgeons 1
Facial sensory disturbances are less common than with ablative procedures, according to the American College of Surgeons 2
Mortality is rare but possible, as stated by the American College of Surgeons 1

Advanced imaging techniques like diffusion tensor imaging (DTI) may help in treatment decision-making by detecting microstructural changes in symptomatic nerves, as suggested by the American College of Radiology 3, 4