Lubricants such as mineral oil are commonly applied to the skin and dermatome before harvesting a split-thickness skin graft. Lubrication of the skin-device interface allows smoother glide of the dermatome and prevents skipping, resulting in obtaining a uniform and continuous skin graft. At our institution, mineral oil is the predominant lubricant used. Recently, during a complex lower extremity reconstruction involving a fasciocutaneous propeller flap for lateral ankle defect and skin grafting of the flap donor site, we were surprised to discover that our institution no longer carried mineral oil because of a national shortage. The procedure occurred during the coronavirus disease of 2019 pandemic, which may have affected the available supply. As normal saline did not appear to be an adequate mineral oil substitute,1 sterile water-soluble ultrasound lubricant was used at the skin-dermatome interface. The split-thickness skin graft was harvested without skipping or premature termination, and the donor site healed well. We used sterile ultrasound lubricant in two additional split-thickness skin graft procedures with similar excellent results. The nine characteristics of an ideal lubricant for split-thickness skin graft harvesting include cost-effectiveness, pain reduction, hemostasis, lubrication, solubility, no side effects, enhancement of wound healing, practicability, and antiseptic effect.2 Mineral oil, despite its frequent use, achieves very few of these ideal qualities and thus could be replaced with another lubricant with more optimal properties. Wettstein et al. demonstrated the effectiveness of saline irrigation as a lubricant in their series of 42 split-thickness skin grafts.1 Likewise, Engelhardt et al. noted that catheter gel lubricant with lidocaine and chlorhexidine additives was an effective agent that achieved all nine ideal qualities except for enhancement of wound healing.2 Ultrasound gel, similar to catheter lubricant, is cost-effective, water soluble, without known side effects, practical, and a lubricant. In the event that mineral oil is unavailable, as in our situation, sterile water-soluble ultrasound gel is an effective lubricant for split-thickness skin graft harvesting with which all surgeons should be familiar. ACKNOWLEDGMENT This study was deemed exempt by institutional board review. DISCLOSURE Neither author has a financial interest to declare in relation to the content of this article. No funding was received for this work. Matthew E. Braza, M.D.Spectrum Health/Michigan State UniversityCollege of Human Medicine Plastic Surgery Ewa Komorowska-Timek, M.D.Spectrum Health/Michigan State UniversityCollege of Human Medicine Plastic Surgery, and Advanced Plastic SurgeryGrand Rapids, Mich.
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