Backache following spinal anesthesia.
D000758:Anesthesia; D000775:Anesthesia, Spinal / Q000150:complications*; D001416:Back Pain / Q000209:etiology*; D006801:Humans; D011300:Preoperative Care
ANESTHESIA, SPINAL/complications; BACKACHE/etiology and pathogenesis; PREOPERATIVE CARE