Related Experiment Video
Updated: Jan 20, 2026

A Murine Model of a Burn Wound Reconstructed with an Allogeneic Skin Graft
Published on: August 8, 2020
Triangular Fossa Graft for Philtral Reconstruction After Facial Burns: A 34-Year Experience
Danny Sam Roh1, Branko Bojovic, Alexander C Woolard
1From the Division of Plastic Surgery, Shriners Hospital for Children-Boston, Massachusetts General Hospital, Harvard Medical School, Boston, MA.
Background:
Upper lip burns and skin grafts used for the resulting deformities all contract, leading to distortion of regional tissues and producing a flattened upper lip devoid of normal anatomic landmarks. Absence of the philtral contour draws attention to the upper lip and can accentuate other reconstructive inadequacies. Philtral restoration requires a 3-dimensional reconstruction capable of resisting contractile forces to restore and maintain normal relationships between the upper and lower lips.
Methods:
This was a 34-year retrospective review of a single surgeon's experience using a composite triangular fossa graft from the ear for philtral reconstruction. Ten patients were identified and analyzed using records of follow-up examinations, long-term clinical evaluations, and photographic documentation.
Results:
Five males and 5 females were identified with 2- to 34-year follow-up. Age at operation ranged from 14 to 52 years. Percent total body surface area ranged from less than 1% to greater than 90%. Previous upper lip grafts prior to the auricular graft included 5 full-thickness skin grafts and 5 split-thickness skin grafts. No significant complications were noted. All patients were satisfied with the end aesthetic result and donor site morbidity.
Conclusions:
A triangular fossa composite graft restores and preserves the philtral dimple and corrects the obvious visible deformity of a featureless upper lip. Addition of tissue loosens the lip transversely, and the cartilage component provides a consistent and predictable upper lip position. This results in improved projection, a concave shape to the upper lip, and a better relationship with the lower lip. Restoration of this anatomic landmark creates a more normal-appearing upper lip and helps to minimize the negative impact of other abnormalities in this vitally important area. The overall improvement in total facial appearance can be profound.
Related Concept Videos
12:18A Murine Model of a Burn Wound Reconstructed with an Allogeneic Skin Graft
08:56Tissue-Engineered Graft for Circumferential Esophageal Reconstruction in Rats
Sternberg's Triangular Theory of Love
02:49A Swine Burn Model for Investigating the Healing Process in Multiple Depth Burn Wounds
08:40Rat Burn Model to Study Full-Thickness Cutaneous Thermal Burn and Infection
09:30Tissue Characterization after a New Disaggregation Method for Skin Micro-Grafts Generation

