ENT Diagnostic and operative ENT 5525a643 Most common complication of Caldwell-Luc operation is A Oroantral fistula B Orbital cellulitis C Hemorrhage D Infraorbital nerve palsy High-Yield Explanation M/C Complication of Caldwell-Luc operation is injury to infraorbital nerve which occurs is 21 % cases. Ref:- Scott Brown 7th edition; pg num:- 1494