Organ replantation (finger, toe, ear, etc.) / Skin graft : in a study led in Great-Britain, 1/3 of the maxillofacial surgeons who have been interrogated use medicinal leeches.
In Surgery, yes !
WARNING : In the United States, Ricarimpex leeches may only be used as an adjunct to the healing of graft tissue when problems of venous congestion may delay healing, or to overcome problems of venous congestion by creating prolonged localized bleeding. Leeches have not been cleared by the FDA for any of the applications in general medicine described on this website or in any other source of information on medicinal leeches, scientific or otherwise.