Main idea: Evidence to guide decisions regarding the use of HA or its derivatives to promote wound healing is still limited. More good-quality randomised controlled trials are warranted.
Hyaluronic acid (HA) and its derivatives are used for chronic wounds, but evidence of their effectiveness remains unclear. The aim of this study was to provide more updated evidence for the effectiveness of HA (or its derivatives) compared with placebo or other agents for promoting healing in chronic wounds.
Results: We identified nine randomised controlled trials involving 865 participants with chronic wounds included in the review. The reporting for mixed arterial and venous ulcers seems to be better quality than that for venous leg ulcers (VLUs) and diabetic foot ulcers (DFUs). Studies provided little evidence regarding the claimed effects of HA or its derivatives on healing of chronic wounds. However, there is some evidence on their effectiveness for reducing pain intensity for mixed arterial and venous ulcers, which involved 255 patients.