Wound Sinus And Fistula Wound "What is a wound sinus and fistula? A detailed question and answers guide" A wound is a discontinuity or break in the surface epithelium. A wound is simple when only skin is involved. It is complex when it involves underlying nerves, vessels, tendons, etc. Types of Wounds 1. Closed Wounds Contusion Abrasion … [Read more...] about Wound Sinus And Fistula Notes