Femoral NerveFemoral NeuropathyCatheters, IndwellingNerve BlockCathetersSciatic NerveCatheterizationQuadriceps MuscleAnesthetics, LocalPudendal NerveObturator NerveNerve RegenerationPeripheral NervesNerve TransferKneePain, PostoperativeArthroplasty, Replacement, KneeCatheterization, Central VenousOptic NerveNerve FibersUreterostomyBupivacaineNerve Compression SyndromesCystostomyHip ContractureAnalgesia, Patient-ControlledPsoas MusclesParalysisOxycodoneAmidesPatellofemoral JointElectric StimulationElectrodes, ImplantedCentral Venous CathetersThighCardiac CathetersCatheterization, PeripheralUltrasonography, InterventionalUrinary CatheterizationNerve EndingsFemoral FracturesSural NerveMedian NervePirinitramideFacial NerveNerve CrushPeripheral Nerve InjuriesInfusion PumpsPain MeasurementTibial NerveUlnar NerveH-ReflexAnalgesiaMotor NeuronsElectromyographyUrinary CathetersIatrogenic DiseaseCompartment SyndromesHipNeedlesMuscle WeaknessEquipment FailureCadaverSpinal Nerves