Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
Balance Foot & Ankle offers same-day appointments for urgent foot and ankle conditions across Southeast Michigan — but the most important factor in outcomes isn’t getting seen quickly. Our podiatrists explain what to do in the first 24-48 hours before your appointment that most patients skip entirely. Call (810) 206-1402 — expert podiatric care across Michigan.
| Fontaine Stage | Rutherford Category | Clinical Features | ABI Range | Management |
|---|---|---|---|---|
| Stage I — Asymptomatic | 0 — Asymptomatic | Reduced pulses; no claudication; found incidentally | 0.7–0.9 | Risk factor modification; antiplatelet; statin; walking program |
| Stage IIa — Mild Claudication | 1 — Mild claudication | Calf pain >200m; resolves with rest in <10 min | 0.5–0.7 | Supervised exercise; cilostazol; risk factor control |
| Stage IIb — Moderate–Severe Claudication | 2–3 — Moderate/severe claudication | Calf/thigh pain <200m; rest pain absent | 0.3–0.5 | Above + consider revascularization if life-limiting |
| Stage III — Rest Pain | 4 — Ischemic rest pain | Constant foot pain at rest; worse supine; relieved by dependency | <0.4; toe pressure <30 mmHg | Urgent revascularization (endovascular or surgical bypass) |
| Stage IV — Tissue Loss (CLTI) | 5–6 — Tissue loss / gangrene | Non-healing ulcer; gangrene; wet or dry necrosis | <0.4; toe pressure <20 mmHg; TcPO₂ <30 mmHg | Emergency revascularization; multidisciplinary wound team; amputation if non-salvageable |
| Diagnostic Test | What It Measures | Normal | PAD Threshold | Limitation |
|---|---|---|---|---|
| Ankle-Brachial Index (ABI) | Ratio of ankle systolic pressure to brachial systolic pressure | 1.0–1.4 | <0.9 = PAD; <0.4 = severe ischemia | Falsely elevated (>1.3) in calcified vessels (diabetics) |
| Toe-Brachial Index (TBI) | Toe systolic pressure / brachial; bypasses vessel calcification | >0.7 | <0.6 = PAD; <0.3 = critical limb threat | Requires photoplethysmography; operator-dependent |
| Transcutaneous PO₂ (TcPO₂) | Oxygen tension at skin surface; reflects tissue perfusion | >40 mmHg | <30 mmHg = critical ischemia; <20 mmHg = unlikely healing | Affected by edema, skin thickness, ambient temperature |
| Duplex Ultrasound | Velocity waveforms; stenosis location and degree | Triphasic waveform | Biphasic or monophasic waveform; velocity ratio >2:1 | Operator-dependent; bowel gas limits aortoiliac imaging |
| CT Angiography (CTA) | Arterial anatomy; stenosis, occlusion, calcification | Patent vessels; no stenosis | >50% stenosis significant | Radiation; contrast nephropathy risk; calcification artifact |
Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
The feet are often the first place that peripheral arterial disease (PAD) becomes apparent — through non-healing wounds, cold or discolored toes, or the distinctive calf cramping of intermittent claudication. Podiatrists function as critical frontline detectors of PAD, seeing patients with foot complaints long before vascular symptoms become obvious to primary care providers. Recognizing PAD early — before critical limb ischemia develops — and rapidly coordinating vascular intervention is one of the most impactful contributions a podiatrist can make to a patient’s long-term health and limb preservation.
The most important clinical decision with Peripheral Arterial Disease Feet Vascular Michigan Podiatrist isn’t which treatment to start with — it’s identifying the correct subtype. That changes everything. Call (810) 206-1402.
What Is Peripheral Arterial Disease?
PAD is caused by atherosclerosis — the progressive accumulation of lipid-rich plaques within the walls of the arteries supplying the legs and feet. As plaques grow and calcify, they narrow the arterial lumen and reduce downstream blood flow. The risk factors are largely identical to those for coronary artery disease: smoking (the most powerful risk factor), diabetes mellitus, hypertension, hyperlipidemia, obesity, and advancing age. PAD is estimated to affect 8–12 million Americans, with dramatically higher rates in diabetic and elderly populations — two groups that comprise a large proportion of any podiatric practice.
Clinical Presentations
PAD exists on a spectrum from asymptomatic to limb-threatening:
- Asymptomatic PAD — reduced ankle-brachial index (ABI) without symptoms. Identified only by screening. Requires risk factor modification and close monitoring.
- Intermittent claudication — reproducible calf (occasionally thigh or buttock) cramping that occurs with a predictable distance of walking and resolves within minutes of rest. Indicates significant arterial stenosis but adequate perfusion at rest.
- Critical limb ischemia (CLI) — rest pain (characteristically worsening when supine, relieved by hanging the foot dependent), non-healing ulcers, and gangrene. CLI is a vascular emergency requiring urgent revascularization to prevent amputation and mortality.
The Podiatrist’s Role: Screening and Frontline Detection
In podiatric practice, PAD screening is performed with the ankle-brachial index (ABI) — the ratio of ankle systolic blood pressure to brachial (arm) pressure measured with a handheld Doppler. A normal ABI is 0.91–1.30. Values below 0.90 indicate PAD; below 0.40 indicates severe ischemia requiring urgent vascular consultation. In diabetic patients with heavily calcified vessels, the ABI may be falsely elevated — in these cases, toe-brachial index (TBI) and toe pressures are more reliable.
Physical examination findings suggesting PAD include absent or diminished pedal pulses, hair loss on the dorsal foot and toes, shiny taut skin, dependent rubor (redness when the foot is hung down), pallor with elevation, delayed capillary refill, and cool foot temperature. Any non-healing wound in a patient with these findings requires urgent vascular evaluation before surgical or wound care intervention.
Management and Limb Preservation
Dr. Biernacki coordinates PAD management in close collaboration with vascular surgery and interventional radiology. Key management principles include:
- Risk factor modification — smoking cessation (most impactful), optimal diabetes control, statin therapy, and blood pressure management
- Supervised exercise therapy — structured walking programs improve claudication distance and quality of life
- Antiplatelet therapy — aspirin or clopidogrel reduces cardiovascular event risk
- Revascularization — endovascular angioplasty/stenting or surgical bypass for CLI and severe claudication; timeliness is critical for limb salvage
- Wound care — offloading, debridement, advanced wound products, and infection control after revascularization establishes adequate perfusion
- Preventive foot care — daily foot inspection, protective footwear, nail and skin care, and avoidance of foot trauma for all PAD patients
With timely revascularization and comprehensive limb preservation care, the majority of PAD patients with CLI can avoid amputation and maintain meaningful quality of life.
Dr. Tom's Product Recommendations
Diabetic Compression Socks — Mild Compression
⭐ Highly Rated
Non-binding diabetic crew socks with seamless construction — NOTE: for PAD patients, compression level must be confirmed with a physician as excessive compression worsens ischemia. These non-binding socks are safe for most PAD patients.
Dr. Tom says: “My vascular doctor and podiatrist both approved these non-binding socks — they protect my feet without restricting circulation.”
Best for: mild PAD with doctor-confirmed safe compression level; diabetic foot protection without tourniquet effect
Not ideal for: critical limb ischemia where any compression is contraindicated; severe PAD without physician clearance
Disclosure: We earn a commission at no extra cost to you.
Propet Diabetic Footwear — Extra Depth
⭐ Highly Rated
Extra-depth therapeutic shoe with smooth seamless interior — critical for PAD and diabetic patients where any shoe friction or pressure point can initiate a non-healing wound.
Dr. Tom says: “After my PAD diagnosis, my podiatrist was insistent about protective footwear — these shoes have prevented the blisters that turned into wounds before.”
Best for: PAD patients with concurrent diabetic neuropathy; wound prevention through pressure elimination; extra-depth accommodation
Not ideal for: critical limb ischemia with open wounds requiring offloading boots under wound care supervision
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- ABI screening in podiatric practice identifies PAD before it progresses to critical limb ischemia and amputation
- Coordinated vascular surgery referral for revascularization dramatically improves limb salvage rates in CLI
- Comprehensive preventive foot care for PAD patients — protective footwear, daily inspection, nail care — prevents the minor trauma that initiates non-healing wounds
❌ Cons / Risks
- ABI may be falsely elevated in diabetic patients with calcified vessels — toe pressures are more reliable in this population
- Many PAD patients are asymptomatic until critical ischemia develops, highlighting why we active screening in high-risk populations
- Revascularization restores flow but does not reverse atherosclerosis — ongoing risk factor management and monitoring is essential
Dr. Tom Biernacki’s Recommendation
Peripheral arterial disease is something I think about with every patient who has a foot wound that isn’t healing the way it should. The number of times I’ve checked pulses or done an ABI on a patient who came in for a ‘callus’ or ‘blister’ and found absent pulses and critical ischemia — those are the cases where catching it makes the difference between a limb and an amputation. My job isn’t just to treat the wound; it’s to understand why it won’t heal. And if the answer is no blood flow, the wound is irrelevant until we fix the plumbing. That means getting vascular surgery involved immediately.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
What are the warning signs of poor circulation in the feet?
Cold feet, hair loss on the toes and dorsal foot, shiny tight skin, color changes (pallor with elevation, redness when hanging the foot down), absent or weak pulses, and wounds that won’t heal are all warning signs requiring vascular evaluation.
Can podiatrists treat PAD?
Podiatrists screen for and detect PAD, provide wound care after revascularization, and manage preventive foot care for PAD patients. Revascularization itself is performed by vascular surgeons and interventional radiologists.
Is PAD the same as poor circulation?
PAD specifically refers to arterial insufficiency — blocked arteries reducing blood flow to the legs and feet. ‘Poor circulation’ can refer to venous insufficiency, lymphedema, or other vascular conditions in addition to PAD.
What is an ABI test?
The ankle-brachial index (ABI) is a simple, non-invasive test comparing blood pressure at the ankle and arm to detect arterial blockage in the legs. An ABI below 0.90 indicates peripheral arterial disease.
Can PAD be reversed?
Atherosclerosis cannot be fully reversed, but progression can be slowed dramatically with risk factor modification. Revascularization restores blood flow to ischemic areas but requires ongoing medical management to prevent re-stenosis.
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Frequently Asked Questions
What causes this condition?
Causes include mechanical stress, biomechanical imbalance, age-related changes, and sometimes systemic disease. Our clinical exam plus imaging identifies the specific driver.
Can it go away on its own?
Mild cases sometimes resolve with rest and supportive footwear. Persistent symptoms past 4-6 weeks rarely resolve without active treatment.
Is surgery required?
Most patients resolve with non-surgical care. Surgery is reserved for refractory cases or structural deformity.
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Our podiatry team serves patients throughout Michigan including Howell, Brighton, and Bloomfield Hills. If you’re dealing with heel pain, ingrown toenails, or a foot injury, we have same-day appointment availability.
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Dr. Tom Biernacki, DPM is a board-certified foot & ankle surgeon (ABFAS & ABPM) at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has made him one of the most-followed foot & ankle educators on YouTube.