Incarceration of the first sacral nerve in a lateral bony recess of the spinal canal as a cause of sciatica.
D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications*; D008160:Lumbosacral Plexus; D012585:Sciatica / Q000209:etiology*; D013115:Spinal Canal
INTERVERTEBRAL DISK DISPLACEMENT/complications; NERVES, SACRAL PLEXUS; SCIATICA/etiology and pathogenesis; SPINAL CANAL