PT - JOURNAL ARTICLE ED - , TI - Challenging Cases in Spine Surgery DP - 2006 Nov 01 TA - American Journal of Neuroradiology PG - 2226a--2228 VI - 27 IP - 10 4099 - http://www.ajnr.org/content/27/10/2226a.short 4100 - http://www.ajnr.org/content/27/10/2226a.full SO - Am. J. Neuroradiol.2006 Nov 01; 27