ABCDEFGHIJKLMNOPQRSTUVWXYZ D Disc Desiccation: Definition Disc Extrusion: Definition Disc Height Loss: Definition Disc Herniation: Definition Disc Protrusion: Definition Back to top E Effacement of Ventral Epidural Fat: Definition Back to top F Facet Arthropathy: Definition Facet Joint Hypertrophy: Definition Back to top I Indentation of Thecal Sac: Definition Back to top L Lateral Recess Stenosis: Definition Back to top N Nerve Root Impingement: Definition Neural Foraminal Stenosis: Definition Neuropathic Spondylopathy: Definition Back to top O Osteophyte Discal Complex: Definition Osteophyte Formation: Definition Back to top R Retrolisthesis: Definition Back to top S Schmorl’s Node: Definition Spondylosis: Definition Synovial Cyst: Definition Back to top