Donor site morbidity of free ulnar forearm flap.

BACKGROUND The purpose of this study was to evaluate the donor site morbidity of the free ulnar forearm flap (UFF). METHODS Consecutive patients undergoing free UFF between 1982 and 2009 were retrospectively reviewed. In addition, detailed assessment of hand function and donor site cosmesis was performed in the most recent 50 patients followed up for at least 12 months. RESULTS In all, 62 of the 242 free UFF donor sites (26%) were closed directly and the remainder required split thickness skin grafting. Donor site complications included total (n = 1) and partial (n = 17) skin graft loss and persistent hypertrophic scarring (n = 4). There was minimal incidence of cold intolerance, parasthesia, and pain; no reduction in joint mobility, grip and pinch strength, and sensory dysfunction, with excellent donor site cosmesis. CONCLUSIONS UFF has several advantages, including the possibility of direct closure of the donor defect, and reduced morbidity and excellent donor site cosmesis.