2van Geffen G J, van den B E, Braak G J. et al. A prospective randomised controlled trial of ultrasound guided versus nerve stimulation guided distal sciatic nerve block at the popliteal fos- sa[J]. Anaesth Intensive Care, 2009, 37(1): 32.
3Thallaj A, Rabah D. Efficacy of ultrasound - guided obturator nerve block in transurethral surgery [ J ]. Saudi J Anaesth, 2011, 5(1): 42.
6Marhofer P,Schr K,Koinig H,et al.Ultrasonographic guidance improves sensory block and onset time of three-inone blocks[J].Anesth Analg,1997,85(4):854-857.
7Kirchmair L, Entner T, Kapral S, et al. Ultrasound guidance for the psoas compartment block: an imaging study. Anesth Analg, 2002, 94 (3) :706-710.
8Karmakar MK, Ho AM, Li X, et al. Ultrasound-guided lumbar plexus block through the acoustic window of the lumbar ultrasound trident. Br J Anaesth, 2008, 100(4) :533-537.
9Bruhn J, Van Geffen GJ, Gielen MJ, et al. Visualization of the course of the sciatic nerve in adult volunteers by ultrasonography. Aeta Anaesthesiol Scand, 2008, 52 (9) : 1298-1302.
10Chin KJ, Perlas A, Chart VW, et al. Needle visualization in ultra- sound-guided regional anesthesia: challenges and solutions. Reg Anesth Pain Med, 2008, 33(6):532-544.
2Thallaj A, Rabah D.Efficacy of ultrasound-guided obtura- tor nerve block in transurethral surgery[J]. Saudi J Anaesth, 2011,5(1 ) :42-48.
3Bruhn J, Van Gefen GJ, Gielen M, et al. Visualization of the cou of the sciatic nerve in adult volunteers by ultra- sonography[J]. Acta Anaesthesiol Scand,2008,52(9) : 1298- 1302.
4Neuman MD,Silber JH,Elkassabany NM,et al. Compara- tive effectiveness of regional versus general anesthesia for hip fracture surgery in adults[J]. Anesthesiology, 2012, 117 ( 1 ) : 72-92.
