SciaticaPressureIntervertebral Disc DisplacementBlood PressureRadiculopathyPiriformis Muscle SyndromeInjections, EpiduralDiskectomyLumbar VertebraeHydrostatic PressureChymopapainLow Back PainBlood Pressure DeterminationSpinal Nerve RootsNerve Compression SyndromesIntervertebral Disc ChemolysisLumbosacral PlexusPain MeasurementIntervertebral DiscPolyradiculopathyTransducers, PressureHypertensionIntracranial PressureIntraocular PressureBlood Pressure Monitoring, AmbulatoryFibrocartilageCauda EquinaSpinal CanalAir PressureAtmospheric PressurePeripheral Nervous System Neoplasms