Department of Neurosurgery;
Nova Clinic;
Biberach;
Germany;
Department of Neurosurgery;
University of Ulm;
Ulm;
Germany;
Department of Diagnostic and Interventional Radiology;
University of Ulm;
Ulm;
Germany;
Zygapophysial; Joint; Facet; Joint; Spine; Back; Pain; Medial; Branch; Block; Magnet; Resonance; Imaging; Interventional; Pain;