Intermittent cauda equina compression due to narrow spinal canal.
D000368:Aged; D002420:Cauda Equina; D006801:Humans; D007383:Intermittent Claudication / Q000209:etiology* / Q000601:surgery; D007405:Intervertebral Disc Displacement / Q000150:complications* / Q000601:surgery; D007796:Laminectomy; D008297:Male; D008875:Middle Aged; D009192:Myelography; D011187:Posture; D013117:Spinal Cord Compression / Q000150:complications* / Q000601:surgery