Peripheral Arterial Disease and the Foot: ABI, Revascularization, and Wound Healing

Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Township, MI. Last updated April 2026.

Peripheral arterial disease (PAD) — atherosclerotic occlusion or stenosis of the arteries supplying the lower extremities — is present in approximately 15% of patients over 70 and is the most common reason that foot and ankle wounds fail to heal despite optimal local wound care. Recognizing PAD as a contributing factor to impaired wound healing, initiating appropriate vascular assessment, and coordinating revascularization with vascular surgery when indicated is one of the most important roles of the podiatric surgeon in diabetic foot wound care.

Ankle-Brachial Index (ABI) and Vascular Assessment

The ankle-brachial index (ABI) is the ratio of systolic blood pressure at the ankle to systolic blood pressure at the arm — the fundamental non-invasive screening test for PAD: ABI >1.3 (non-compressible calcified vessels — falsely elevated in diabetics; requires toe-brachial index instead); ABI 1.0–1.3: normal; ABI 0.9–1.0: borderline; ABI 0.7–0.9: mild PAD; ABI 0.5–0.7: moderate PAD; ABI <0.5: severe PAD — critical limb ischemia threshold. Toe-brachial index (TBI): more accurate than ABI in diabetic patients with calcified vessels — TBI <0.6 indicates significant toe ischemia; transcutaneous oxygen pressure (TcPO2): >40 mmHg required for wound healing — values below 20–25 mmHg indicate severe ischemia with very poor healing potential. Referral criteria: ABI <0.6, non-healing wound, or rest pain warrants referral to vascular surgery for duplex ultrasound and angiography to assess revascularization candidacy.

Revascularization and Wound Healing

Percutaneous transluminal angioplasty (PTA) and stenting: endovascular revascularization for appropriate arterial anatomy (tibial artery angioplasty for below-knee PAD); avoids surgical incision; preferred for high-risk surgical patients; restenosis rates vary by vessel diameter and lesion length. Surgical bypass: femoral-popliteal or femoral-tibial bypass for long-segment occlusions not amenable to endovascular treatment; excellent long-term patency with autologous vein graft; requires adequate inflow and outflow vessels. Wound healing after revascularization: adequately revascularized wounds have equivalent healing potential to wounds in non-ischemic patients; revascularization before aggressive wound debridement prevents ischemic wound expansion. Dr. Biernacki at Balance Foot & Ankle performs ABI and toe pressure assessment at the initial wound evaluation visit and coordinates vascular surgery consultation for patients with PAD and impaired wound healing. Call (810) 206-1402 at our Bloomfield Township or Howell office for diabetic foot wound evaluation.

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In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your your foot or ankle concern, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Township offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Frequently Asked Questions

What is the best treatment for peripheral neuropathy in the feet?

Treatment depends on the cause. For diabetic neuropathy, blood sugar control is most important. Other options include B12 supplementation, MLS laser therapy, topical creams (capsaicin, lidocaine), and prescription medications like gabapentin or duloxetine. Our podiatrists tailor treatment to each patient’s specific type and severity.

Can neuropathy be reversed?

In some cases — particularly when caused by vitamin deficiencies or early-stage diabetes with good glucose control. However, long-standing nerve damage is often permanent. Treatment focuses on slowing progression, managing symptoms, and preventing dangerous foot complications like ulcers.

How often should I see a podiatrist if I have neuropathy?

Patients with peripheral neuropathy should have comprehensive foot exams every 3–6 months, or more frequently if they have diabetes, poor circulation, or a history of foot ulcers.

Need Treatment at Balance Foot & Ankle?

Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin see patients at our Howell and Bloomfield Township offices.

Book Online or call (810) 206-1402

Most Common Mistake We See

The most common mistake we see is: Waiting too long before seeking care. Fix: any foot pain lasting more than 4 weeks, or any sudden severe symptom, deserves a professional evaluation rather than more rest.

Warning Signs That Need Same-Day Care