English to Polish Medical Medical (general) Plastic surgery

Esser took a skin graft from a patient’s thigh and wrapped it, raw side out, around a firm supporting material, or stent. He then inserted this package into a surgically prepared pocket at the site where the graft was needed. Once the two raw sides of the pocket and graft had adhered to each other, Esser removed the stent and opened up the graft to reveal healthy skin inside. This ensured that the wound was completely lined with epithelium—a vital tissue lining the internal and external surfaces of organs and glands.

Mam generalnie problem ze słowem "raw" w takim kontekście - tj. "odwrotnej" strony skóry. np. raw underside exposed, with
the raw side facing out.