Lower Trapezius Myocutaneous Propeller Flap Based on Dorsal Scapular Artery.

BACKGROUND: The pedicled lower trapezius myocutaneous flap is generally transferred to the recipient site through a subcutaneous tunnel, and a portion of the flap buried in the tunnel needs to be de-epithelialized. Thus, considerable amount of normal skin is sacrificed, and the redundant tissue buried in the tunnel can cause bulging deformity. We believe that transferring the lower trapezius myocutaneous flap in a propeller fashion can avoid the aforementioned issues.

METHODS: A retrospective review was performed on all lower trapezius myocutaneous propeller flap reconstructions by a single surgeon from July 2013 to March 2021. Data on patient demographics, diagnosis, features of the defect, characteristics of the flap, and the outcome were collected and analyzed.

RESULTS: Thirty-three lower trapezius myocutaneous propeller flaps were used to reconstruct soft tissue defects in the head, neck, and back. The etiologies were malignancy, trauma, postburn scar contracture, and congenital melanocytic nevus. The mean skin paddle dimensions were 29.0 cm in length (range, 13-45 cm) and 10.9 cm in width (range, 6-15 cm). The donor sites were closed primarily in 30 patients, closed using a skin graft in 1 patient, and covered with the second flap in 2 patients. Venous congestion occurred in the distal portion of 4 flaps and partial necrosis in the distal 6 cm of 1 flap. The average follow-up time was 17.5 months (range, 1-56 months). The normal contour of the back was preserved without bulging deformity. No patient developed a winged scapula or a decrease in shoulder elevation.

CONCLUSIONS: The lower trapezius myocutaneous propeller flap may be an option for reconstruction of soft tissue defects of the head, neck, and back with less waste of normal tissue and bulging deformity.