Conditions
Diabetic Foot & Non-Healing Wounds: When the Problem Is Blood Flow
A wound that won't heal is often a circulation problem in disguise. When a foot ulcer or sore lingers for weeks without improving — especially in someone with diabetes — reduced blood flow to the foot is one of the most common reasons, and one of the most treatable.
Cardentey Vascular Care provides the vascular side of wound care: finding out whether poor circulation is keeping a wound from healing, and restoring blood flow when it is. We do this alongside your wound care team and podiatrist, so the wound gets healed and the limb gets protected.
Why won't my foot wound heal?
A foot wound often won't heal because not enough blood is reaching it. Healing requires oxygen and nutrients delivered by the bloodstream; when the arteries to the foot are narrowed by peripheral artery disease, the tissue simply doesn't get what it needs to repair itself. Restoring blood flow is frequently the missing piece that allows a stubborn wound to finally close.
This is why a non-healing wound deserves a circulation check. Good wound care — cleaning, dressing, offloading pressure, treating infection — is essential, but it can only do so much if the blood supply underneath is inadequate.
How are diabetes, wounds, and circulation connected?
Diabetes raises the risk of foot wounds in several ways at once: it can reduce sensation in the feet (so injuries go unnoticed), impair the immune response, and — critically — accelerate the artery-narrowing process that limits blood flow. About 1 in 7 people with diabetes will develop a foot ulcer in their lifetime, and poor circulation is a major reason those ulcers turn dangerous.
The numbers are sobering: diabetes is the leading cause of non-traumatic lower-limb amputation, and peripheral artery disease is found in up to 90% of people with diabetes who undergo a major amputation. But that same fact points to the solution — because in most of those cases, the underlying circulation problem could have been evaluated and, in many cases, treated.
Doesn't diabetes cause "small vessel disease" that can't be fixed?
This is a common and harmful misconception. The vascular disease that threatens the diabetic foot is mainly macrovascular — narrowing of the larger arteries from atherosclerosis — not untreatable "small vessel" disease. That distinction matters enormously, because macrovascular blockages often respond well to procedures that restore blood flow. Being told a diabetic foot problem can't be improved because of "small vessels" is a reason to get a vascular opinion, not to give up.
How does a vascular surgeon help a non-healing wound?
A vascular surgeon evaluates the blood supply to the wound and, when circulation is the problem, restores it. The first step is simple, painless testing of blood flow to the foot. If the arteries are significantly narrowed, treatment to reopen or bypass them — angioplasty, stenting, atherectomy, or bypass surgery — can dramatically improve the foot's chance to heal. Restoring arterial blood flow is widely regarded as the single most important factor in healing a diabetic foot ulcer and preventing amputation.
As a board-certified vascular surgeon trained in both minimally invasive and open techniques, Dr. Cardentey can target blood flow specifically to the area of the foot where the wound needs to heal.
Who treats the wound itself — you or my podiatrist?
Both, working together. Healing a diabetic foot wound is a team effort, and the national guidelines specifically call for this multidisciplinary approach. Your wound care specialist and podiatrist manage the wound — debridement, dressings, offloading, infection control, and foot structure. Cardentey Vascular Care handles the circulation — making sure the foot is getting the blood flow it needs to heal.
We work alongside your existing care team, not in place of it. If you already have a podiatrist or wound care provider, we coordinate with them. If you need one, we have a trusted referral network in the area. You keep your team; we add the vascular expertise that often makes the difference between a wound that heals and one that doesn't.
When should I see a vascular specialist for a foot wound?
You should be evaluated if a foot wound hasn't improved in about two weeks, if you have diabetes along with any foot sore, or if you've been told amputation may be needed. With a threatened foot, time matters — the sooner blood flow is restored, the better the chance of healing and saving the limb.
FAQ
Frequently asked questions
The most common reason a diabetic foot ulcer won’t heal is inadequate blood flow to the foot. Diabetes accelerates artery narrowing, and without enough circulation the tissue can’t repair itself. A simple test of blood flow can reveal whether circulation is the problem — and if it is, restoring it often allows the wound to heal.
Yes. Wounds need a steady blood supply to deliver the oxygen and nutrients required for healing. When arteries to the foot or leg are narrowed, wounds heal slowly or not at all. A vascular evaluation determines whether circulation is the issue and whether it can be restored.
Not at all — most diabetic foot wounds can be healed, especially when circulation problems are found and treated early. Amputation becomes a risk when a wound is left untreated or when poor blood flow goes unaddressed. Prompt, coordinated care between wound specialists and a vascular surgeon greatly improves the odds of saving the foot.
Ideally both. A podiatrist and wound care team manage the wound itself, while a vascular surgeon checks and restores the blood flow the wound needs to heal. The two roles complement each other, and the best outcomes come from them working together.
A wound that won't heal deserves a circulation check
If you have diabetes and a foot wound that isn't healing — or you've been told amputation may be necessary — a vascular evaluation can determine whether blood flow is the problem and what can be done about it.
Call our Largo office to schedule an evaluation, or request an appointment online. If your foot is at risk, tell us when you call so we can see you quickly.