Pt had a very large perforation in her septum, approximately 3.0 cm x 2.0 cm. Dr. Kridel successfully closed this perforation. Perforations can be caused by many things, in this instance it occurred as a result of a poor septoplasty performed by another dr. Septal perforation repair is a very complicated surgery. Dr. Kridel is one of the few surgeons who perform it. He has published extensively on this topic in scientific journals and medical textbooks. He is considered THE leading expert on this procedure.