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Poor Circulation

What is Peripheral Arterial Disease?

Commonly referred to as “poor circulation,” Peripheral Arterial Disease (P.A.D.) is the restriction of blood flow in the arteries of the leg. When arteries become narrowed by plaque (the accumulation of cholesterol and other materials on the walls of the arteries), the oxygen-rich blood flowing through the arteries cannot reach the legs and feet.

The presence of P.A.D. may be an indication of more widespread arterial disease in the body that can affect the brain, causing stroke, or the heart, causing a heart attack.

Signs and Symptoms

Most people have no symptoms during the early stages of P.A.D. Often, by the time symptoms are noticed, the arteries are already significantly blocked.

Common symptoms of P.A.D. include:

  • Leg pain (cramping) that occurs while walking (intermittent claudication)
  • Leg pain (cramping) that occurs while lying down (rest pain)
  • Leg numbness or weakness
  • Cold legs or feet
  • Sores that won’t heal on toes, feet, or legs
  • A change in leg or foot color
  • Loss of hair on the feet and legs
  • Changes in toenails—color and thickness

If any of these symptoms are present, it is important to discuss them with a foot and ankle surgeon. Left untreated, P.A.D. can lead to debilitating and limb-threatening consequences.

Risk Factors of P.A.D.

Because only half of those with P.A.D. actually experience symptoms, it is important that people with known risk factors be screened or tested for P.A.D.

The risk factors include:

  • Being over age 50
  • Smoking (currently or previously)
  • Diabetes
  • High blood pressure
  • High cholesterol
  • Personal or family history of P.A.D., heart disease, heart attack, or stroke
  • Sedentary lifestyle (infrequent or no exercise)


Diagnosis of P.A.D.

To diagnose P.A.D., the foot and ankle surgeon obtains a comprehensive medical history of the patient. The surgeon performs a lower extremity physical examination that includes evaluation of pulses, skin condition, and foot deformities to determine the patient’s risk for P.A.D. If risk factors are present, the foot and ankle surgeon may order further tests.

Several non-invasive tests (ultrasound) are available to assess P.A.D. The ankle-brachial index (ABI) is a simple test in which blood pressure is measured and compared at the arm and ankle levels. An abnormal ABI is a reliable indicator of underlying P.A.D. and may prompt the foot and ankle surgeon to refer the patient to a vascular specialist for additional testing and treatment as necessary.

General Treatment of P.A.D.

Treatment for P.A.D. involves lifestyle changes, medication and, in some cases, surgery.

  • Lifestyle changes. These include smoking cessation, regular exercise, and eating a heart-healthy diet.
  • Medications. Medicines may be used to improve blood flow, help prevent blood clots, or to control blood pressure, cholesterol, and blood glucose levels.
  • Surgery. In some patients, balloons, stents, small incision (endovascular) procedures or open (bypass) surgery of the leg are needed to improve blood flow.


P.A.D. and Foot Problems

Simple foot deformities (hammertoes, bunions, bony prominences) or dermatologic conditions such as ingrown or thickened fungal nails often become more serious concerns when P.A.D is present. Because the legs and feet of someone with P.A.D. do not have normal blood flow—and because blood is necessary for healing—seemingly small problems such as cuts, blisters, or sores can result in serious complications.

Having both diabetes and P.A.D. further increases the potential for foot complications. People with diabetes often have neuropathy (nerve damage that can cause numbness in the feet), so they don’t feel pain when foot problems occur. When neuropathy occurs in people with P.A.D., ulcers can develop over foot deformities and may never heal. For this reason, P.A.D. and diabetes are common causes of foot or leg amputations in the United States.

Once detected, P.A.D. may be corrected or at least improved. The foot and ankle surgeon can then correct the underlying foot deformity to prevent future problems should the circulation become seriously restricted again. Those with P.A.D. or on blood thinners should have their toenails trimmed and corns and calluses treated by the podiatrist to avoid self injury and infection.

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