Inclusion Criteria:  All participants with chronic ischemic wounds treated at LSCVAMC will be potentially eligible for the study Primary target populations will include Veterans with SCI who are inpatients or residents of the on-site Long-Term Care Unit and Veterans with diabetes being followed by the Podiatry Service for wound care  Exclusion Criteria:  In addition to meeting the general inclusion criteria noted above, further exclusion criteria relating to clinical factors include:  Age less than 18 years. Pregnancy