This is a prospective, observational study. All medical and surgical care provided to the patient group will be standard of care.
Patient group: Once a patient is identified as requiring vascular intervention or lower extremity ulceration (includes lower extremity wound of any cause, a surgical incision, a flap or graft) and consent to participation, their lower extremity will be imaged. They will be imaged preop, intraop (if feasible) and on post-op day 1 + or - 7 days if they require surgery and for each surgery related to the ulceration. They will also be imaged once a month in follow up for up to a total of 6 months or healing of the wound, determined by study physician.
Normal group: The normal group will have one-time imaging and data collection.
The Kent instrument does not touch the patient and is being evaluated to measure perfusion to predict wound healing, flap survival and amputation level healing. They are research only and not standard of care, and are not being used to determine care in the patient group.
