Hijjah 18, 1431/Nov 24, 2010, SPA -- The Custodian of the Two Holy Mosques, King Abdullah bin Abdulaziz Al Saud successfully underwent back surgery today at New York Presbyterian Hospital in the United States of America, the Royal Court said in a statement issued here today. The statement explained that "Thanks to God Almighty, the King had a back operation in which a blood clot was extracted, the slipped disc was corrected and the injured vertebrae was stabilized", adding that the surgery was accomplished successfully.