Background: The surgical treatment for therapy-resistant venous leg ulcers is shave therapy with mesh graft transplantation. Objective: To demonstrate the need of complete shaving with help of histomorphological criteria. Methods: Biopsies were taken from the bottom and the border of the 28 ulcers and from nonulcer skin nearby. Specimens were analyzed in correlation to the clinical course 6 months after the treatment (healed/nonhealed/recurrent). Results: 10 ulcers healed, 10 were recurrent and 8 nonhealed. Nonhealed ulcers had an increased broadening of collagen fibers and rete ridges and reduced elastic fibers at the border of the ulcer. Significantly more obliterated vessels were in the upper dermis at the border of the nonhealed ulcers. Recurrent ulcers showed more signs of dermatoliposclerosis. Conclusion: In nonhealed and recurrent ulcers histomorphological aspects of dermatoliposclerosis are still detectable. Thus, a more extensive fibrosis seems to be associated with a poorer outcome. The hypothesis that possibly a more aggressive shave therapy can increase the healing rate should be verified in a prospective study.