Devices, such as dressing and implants, for treatment of chronic wounds comprising controlled delivery systems for butyric acid or salts, polymers, or derivatives thereof are provided. These devices are particularly useful when it is desirable to promote angiogenesis in a chronic wound. In the preferred embodiment, the implants are resorbable, provide a temporary scaffold for the in-growth of cells, tissues, and blood vessels to help regenerate the extracellular matrix, and deliver butyric acid to the chronic wound. The dressings and implants may also contain one or more antibiotics to treat or prevent infection in the wound, and/or inhibitors of proteases to modulate protease activity in the wound.
