ENT Nose and paranasal sinuses 913cb3d7 Most common complication of cadwell-luc operation is: A oroantral fistula B Infraorbital nerve palsy C Hemorrhage D Orbital cellulitis High-Yield Explanation Most common complication of Caldwell-Luc operation is injury to infraorbital nerve which occurs is 21% cases. Ref.Scott Brown 7/e,Vol 2,p1494.