Sphincterectomy of sphincter of oddi is performed at: (A) 3 O'clock position, (B) 6 O' clock position, (C) 9 O'clock position, (D) 11 O'clock position
Answer is D. Transduodenal Sphincterectomy This cut is made Superiorly (at 11 O'clock position) for 4 to 5 mm. The sphincter is incised at the 11 O'clock position to avoid injury to the pancreatic duct Ref: Sabiston 20th edition Pgno :1496