3Urmey WF, Grossi P. Percutaneous electrode guidance: a noninvasive technique for prelocation of peripheral nerves to facilitate peripheral plexus or nerve block. Reg Anesth Pain Med,2002,27:261-267.
4Tulehinsky A, Weller Ks, Rosenblum M, et al. Nerve stimulator polarity and braehial plexus block. Anesth Analg, 1993, 77 : 100-103.
5Grossi P,Urmey WF. Peripheral nerve blocks for anaesthesia and postoperative analgesia. Curr Opin Anaesthesia, 2003,16 : 493-501.
6Vloka JD, Hadzic A, Drobnik L, et al. Anatomic landmarks for femoral nerve block:a comparison of four needle insertion sites. Anesth Analg, 1999,89 : 1467-1470.
7di Benedetto P, Bertini L, Casati A, et al. A new posterior approach to the sciatic nerve block: a prospective, randomized comparison with the classic posterior approach. Anesth Analg, 2001,93 : 1040-1044.
8Franco CD. Posterior approach to the sciatic nerve in adults:is euclidean geometry still necessary? Anesthesiology, 2003, 98 : 723-728.
9Gaerther E, Lascurain P, Venet C,et al. Continuous parasacral sciatic block: a radiographic study. Anesth Analg, 2004, 98 :831-834.
10Asao Y, Higuchi T, Tsubaki N, et al. Combined paravertebral lumbar plexus and parasaeral sciatic nerve block for reduction of hip fracture in four patients with severe heart failure. Masui,2005,54:648-652.
5Pandin P,Vancutsem N,Salengros JC,et al.The anterior combined approach vis a single skin injection site allows lower Iimb anesthesia in supine patients[J].Can J Anaesth.2003,50(8):801-804.
6Martyr J W,Clark M X.Hypotension in elderly patients undergoing spinal anaesthesia for repair of fractured neck of femur.A comparison of two different spinal solutions[J].Anaesth Intensive Care,2001,29(5):501-505.
8Martyr JW,Clark MX. Hypotension in elderly patients under- going spinal anaesthesia for repair of fractured neck of femur. A comparison of two different spinal solutions[J]. Anaesth In- tensive Care,2001,29(5) :501-505.
9Wulf H,Behnke H,Vogel I,et al. Clinical usefulness,safety,and plasma concentration of ropivacaine 0.5% for inguinal hernia repair in regional anesthesia[J].Reg Anesth Pain Med,2001,26 (4) :348-351.
10Bergeron SG, Kardash KJ, Huk OL, et al. Functional outcome of femoral versus obturator nerve block after total knee arthroplasty[J]. Clin Orthop Relat Res, 2009,467(6): 1458-1462.