Published May 19, 2021 in the journal Experimental Dermatology, this study assessed the effects of topical cannabis treatments in 14 elderly patients with recalcitrant leg ulcers.
Authors concluded: “The rapid wound closure of previously non-healing venous leg ulcers among elderly and highly complex patients suggests that Topical Cannabis-Based Medicines may become effective adjuvants in conjunction with compression therapy."
11 of the 14 patients reported complete wound closure within 34 days. Several other case reports have also shown wound healing effectiveness of cannabis topicals, and the reduction in use of analgesic (pain killing) medicines.
The study is behind a paywall now, but a nice summary article from NORML is here.