A Comparison of AmnioExcel® and Total Contact Casting (TCC-EZ) Versus Standard Wound Care and TCC-EZ in Treating Diabetic Foot Ulcers Best practice is to treat DFUs with standardized care and, if unsuccessful, use advanced modalities. This prospective clinical trial will compare healing rates between two treatment modalities in patients with DFUs in an ambulatory wound care clinic. The treatments are Total Contact Cast (TCC-EZ) with AmnioExcel® and TCC-EZ with standard treatment.