The Leg Pain Nobody Takes Seriously
Peripheral arterial disease affects roughly one in every twenty Americans over the age of 50 — and the vast majority of them do not know they have it. In Portland, Maine, where cold winters keep people sedentary for months and where smoking rates and diabetes prevalence remain stubbornly above the national average, PAD is hiding in plain sight. The leg cramps that slow you down on Congress Street. The cold feet you blame on a Maine February. The wound on your shin that has not healed in six weeks. These are not inevitable consequences of getting older. They are warning signs of arterial insufficiency — and they deserve a real evaluation.
Peripheral arterial disease occurs when atherosclerotic plaque narrows the arteries that supply blood to your legs and feet. The same process that causes heart attacks and strokes — the gradual buildup of fatty deposits inside arterial walls — happens in the peripheral circulation too. When blood flow to the lower extremities is reduced, tissues are starved of oxygen. Muscles cramp during exertion. Skin becomes cool or discolored. Wounds fail to heal. In advanced cases, PAD leads to tissue death and amputation. Nationally, PAD contributes to over 150,000 amputations per year, and the majority of those patients had symptoms for years before anyone investigated.
Why PAD Gets Missed
The classic symptom of PAD is intermittent claudication — leg cramping, aching, or fatigue that occurs with walking and subsides with rest. The problem is that this symptom profile overlaps almost perfectly with degenerative joint disease, spinal stenosis, and simple deconditioning. A 62-year-old in South Portland who tells her doctor that her calves ache when she walks uphill is far more likely to be told she has arthritis than to be referred for an arterial duplex ultrasound. And because PAD develops gradually over years, many patients unconsciously adapt — they walk shorter distances, take more breaks, avoid stairs — and never realize the problem is vascular rather than musculoskeletal.
Beyond claudication, PAD can present with subtler findings that patients and even clinicians dismiss: persistent coldness in one foot, a slow-healing cut or sore on the lower leg, diminished hair growth on the shins, or toenails that grow unusually thick and brittle. These are all manifestations of chronic ischemia. If you have read our article on vascular symptoms that should not be ignored, you know that the body rarely produces these changes without cause.
Portland's At-Risk Population
Two populations carry the highest risk for peripheral arterial disease: people with diabetes and people who smoke. Portland and greater Cumberland County have significant numbers of both. Diabetes damages the endothelial lining of blood vessels throughout the body, accelerating plaque formation and calcification in the peripheral arteries. Diabetic patients are two to four times more likely to develop PAD than the general population, and their disease tends to be more diffuse and harder to treat once it progresses. Smoking is the single most powerful modifiable risk factor — current smokers have a fourfold increase in PAD risk, and even former smokers carry elevated risk for years after quitting.
Additional risk factors include hypertension, high cholesterol, a family history of atherosclerotic disease, chronic kidney disease, and age over 65. If you carry two or more of these risk factors, a peripheral arterial evaluation is not optional screening — it is essential clinical information. PAD is also a powerful independent predictor of heart attack and stroke. Patients diagnosed with peripheral arterial disease have a three-to-six-fold higher risk of cardiovascular death compared to patients without it, which makes early detection relevant far beyond the legs.
What a Peripheral Arterial Duplex Evaluates
A peripheral arterial duplex ultrasound uses B-mode imaging and pulsed-wave Doppler to evaluate blood flow through the major arteries of the lower extremities — from the common femoral artery at the groin through the popliteal artery behind the knee and into the tibial and dorsalis pedis arteries at the ankle and foot. The sonographer measures peak systolic velocities at multiple points, looking for focal increases that indicate stenosis. A normal artery produces a characteristic triphasic waveform. As disease progresses, the waveform becomes biphasic and eventually monophasic — a reliable indicator of significant upstream narrowing or occlusion.
The exam also includes ankle-brachial index measurement, which compares systolic blood pressure at the ankle to pressure in the arm. A normal ABI is between 1.0 and 1.4. Values below 0.9 are diagnostic for PAD. Values below 0.5 indicate severe disease and potential limb threat. The entire study takes approximately 30 minutes, involves no radiation or contrast dye, and requires no special preparation — you do not need to fast, stop medications, or change your routine.
Mobile PAD Screening — No Referral, $397 Flat
BlackPoint Diagnostics brings hospital-grade peripheral arterial screening directly to your home in Portland and the surrounding communities. There is no referral required. No waiting room. No facility fee. The cost is $397 flat — the same price whether you are seen in Portland, South Portland, Westbrook, Cape Elizabeth, or Scarborough. Every study is performed by an ARDMS-certified sonographer with 20 years of cardiovascular imaging experience and reviewed by a board-certified cardiologist. Your written report, including waveform analysis, velocity measurements, ABI results, and clinical interpretation, is delivered within 24–48 hours.
If you have been told your leg pain is arthritis, if your feet are always cold, if a wound on your lower leg has not healed the way it should — consider that the problem may be arterial. A 30-minute ultrasound can differentiate PAD from every other cause. And if disease is found early, the treatment options are far better: smoking cessation, supervised exercise programs, antiplatelet therapy, and statin therapy can slow or halt progression in the majority of cases. To learn more about PAD and who should be tested, read our detailed guide on peripheral arterial disease screening.
Serving Portland, South Portland, Westbrook, Cape Elizabeth, Scarborough, and surrounding Greater Portland communities. Book directly — no referral needed, same-week appointments available.
Questions? Call or text (207) 409-7797.