Postdural puncture headache after continuous spinal anesthesia.
D000005:Abdomen / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000775:Anesthesia, Spinal / Q000009:adverse effects* / Q000379:methods; D005260:Female; D006261:Headache / Q000209:etiology*; D006801:Humans; D007866:Leg / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009985:Orthopedics; D011446:Prospective Studies; D013129:Spinal Puncture / Q000009:adverse effects*; D014656:Vascular Surgical Procedures