Fig. 1From: Dural sac cross-sectional area is a highly effective parameter for spinal anesthesia in geriatric patients undergoing transurethral resection of the prostate: a prospective, double blinded, randomized studySC = spinal canal, AC = anterior complexus, including the posterior longitudinal ligament and vertebral ligament, PC = posterior complexus, including the ligamentum flavum and endorhachisBack to article page