Spondylosis
		n Degenerative disease n Disc desiccation, bulges and protrusions n Ligamentum flavum hypertrophy n Facet arthritis and hypertrophy n Degenerative spondylolisthesis (seen in 7% of asx patients) n Osteophytes n All combine to cause stenosis of spaces that nerve roots pass through: n Canal, lateral recess, neural foramen