title: Versatility of the O-Z Flap in the Reconstruction of Facial Defects.
abstract: BACKGROUND
  The O-Z flap has traditionally been used for surgical defects adjacent to critical anatomic structures requiring a repair option that minimizes distortion and functional impairment. However, another advantage of the O-Z flap is that it is tissue conservative, particularly in comparison to primary closure. In fact, the design simply takes the Burow's triangles that would be discarded and rotates them inward.
  
  
  OBJECTIVE
  The purpose of this work is to detail the type of post-Mohs defects, which might benefit from consideration of the O-Z flap with emphasis on tissue conservation and restoration of contour to the surgical site. Furthermore, the authors wish to describe unique considerations in each location and methods to appropriately plan the O-Z flap in each circumstance.
  
  
  METHODS
  The authors reviewed all flaps classified as O-Z in their tumor registry. The approximate size of the defect reconstructed, complications, and long-term outcomes were recorded.
  
  
  RESULTS
  O-Z flap implementation is described in detail for repair of defects located at the lateral nasal tip, nose-cheek junction, medial canthus, and mid-cheek.
  
  
  CONCLUSIONS
  The O-Z flap can be effectively used to repair defects located at the lateral nasal tip, nose-cheek junction, medial canthus, and mid-cheek. It is a mechanically simple flap with predictable tension vectors, which can be specifically oriented to protect the free margin.
authors.affiliation: Division of Dermatology, Cooper Medical School of Rowan University, Marlton, New Jersey.
authors.forename: Christie G
authors.initials: CG
authors.lastname: Regula
authors.forename: Austin
authors.initials: A
authors.lastname: Liu
authors.forename: Naomi
authors.initials: N
authors.lastname: Lawrence
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005145:Face / Q000601:surgery*; D005153:Facial Neoplasms / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015580:Mohs Surgery; D019651:Plastic Surgery Procedures / Q000379:methods*; D012878:Skin Neoplasms / Q000601:surgery*; D013524:Surgical Flaps