Radiological sign of spondylolysis?
Ans BIn spondylolysis on oblique view scotty dog with collar is seen while in spondylolisthesis inverted napoleon hat sign (AP view L5 over S1) and scotty dog with broken neck sign (oblique view) are seen.
Napoleon's hat sign
'Scottish dog with collar' sign
Winking owl sign
'Cap' sign
Nervous System