Microvascular Decompression SurgeryBlood-Nerve BarrierDecompression, SurgicalTrigeminal NeuralgiaHemifacial SpasmNerve Compression SyndromesMicrosurgeryGlossopharyngeal Nerve DiseasesTrigeminal NerveSpinal StenosisRhizotomyDecompressionLaminectomyFacial Nerve DiseasesDecompression SicknessGraves OphthalmopathyOrbitSpasmLumbar VertebraeGlossopharyngeal NerveCerebellopontine AngleTreatment OutcomeNeurosurgical ProceduresMicrocirculationPostoperative ComplicationsMagnetic Resonance ImagingRetrospective StudiesProspective StudiesRecurrence