This is a question about an MRI report done for a women who is suffering from back and knee pain?

What is the meaning of Degenerative grade I anerior sublluxation of L3 over L5 and L5 over L3 seen. 2) Broad based disc extrusion and superior migration seen at L3-L5 level narrowing the spinal canal, lateral recessses and compressing the thecal sac and nerve roots. 3) Disc dehydration seen at all lumbar disc spaces 4) Whole spine: Blding annulus seen at C4-C5 and C4-C6 levels narrowing the spinal canal and slightly indenting the cord surface. I will be greteful if an expert intrepreat the findings of MRI