Venous Stasis Ulcer

What Is a Venous Stasis Ulcer?

A venous stasis ulcer (also called a venous leg ulcer) is a break in the skin of the lower leg caused by sustained, abnormal blood pressure inside the leg veins. In healthy veins, one-way valves keep blood flowing upward toward the heart against gravity. When these valves become weakened or damaged—a condition known as venous insufficiency—blood pools in the lower extremities. Over time, the increased fluid pressure leaks into surrounding tissues, triggering chronic inflammation, tissue breakdown, and non-healing open sores. To learn more about our clinic-based and mobile programs for these conditions, visit our venous stasis ulcers condition page.

Signs and Symptoms

Venous stasis ulcers typically form on the inner aspect of the lower leg, just above the ankle (the gaiter area). Common signs and symptoms include:

• Shallow, irregular wound bed: The sore is often shallow with uneven edges, frequently containing yellow slough or bright red tissue.
• Heavy drainage: These wounds frequently produce moderate to high volumes of clear or pale fluid due to underlying fluid retention.
• Persistent swelling: Lower-leg edema that often worsens after standing or sitting for long periods.
• Skin changes: The periwound skin often appears discolored, showing a reddish-brown, stained look caused by iron deposits from pooled red blood cells (hemosiderin staining). The skin may feel firm, leathery, or warm.
• Aching or heaviness: Patients frequently report dull, throbbing leg pain or fatigue that is partially relieved by elevating the legs.

Causes and Risk Factors

The primary driver of a venous ulcer is chronic venous hypertension. Several factors increase the risk of developing venous insufficiency and subsequent ulcers, including:

• Advancing age
• History of deep vein thrombosis (DVT) or blood clots in the legs
• Varicose veins
• Prolonged periods of standing or sitting
• Obesity, which places additional downward pressure on the pelvic and leg veins
• Prior leg injury, surgery, or multiple pregnancies
• Reduced mobility, which limits the calf-muscle pump action that helps return venous blood

Evaluation and Diagnosis

Accurate assessment is critical because treating a venous ulcer requires addressing the underlying circulatory problem. A wound care clinician inspects the depth, size, and drainage of the sore, checks for signs of infection, and reviews overall vascular health. Before applying therapeutic compression, clinicians typically evaluate arterial circulation—often using an ankle-brachial index (ABI) test—to verify that arterial blood flow is sufficient to support compression safely.

Treatment Approaches

Healing a venous stasis ulcer requires a dual focus: managing the wound bed and managing the venous hypertension. Standard clinical strategies include:

• Compression therapy: Specialized multi-layer wraps or garments are the gold standard for venous ulcers. Compression counteracts venous hypertension, reduces swelling, and supports healthy blood return.
• Advanced wound cleansing and debridement: Removing dead tissue, bacteria, and debris through clinical sharp debridement creates a clean environment that encourages cell growth.
• Exudate-managing dressings: Dressings such as foams or super-absorbent pads protect the surrounding skin from excess moisture and reduce maceration.
• Advanced tissue therapies: For chronic, slow-healing wounds, clinicians may utilize graft placements with cellular or tissue-based products to stimulate wound closure.
• Elevation and movement: Patients are encouraged to elevate their legs above heart level when resting and perform gentle walking exercises to engage the calf muscles.

For patients who have difficulty traveling to an outpatient clinic, bedside wound care brings these clinical interventions directly to private residences and care communities across the Dallas-Fort Worth area.

When to Seek Professional Care

Venous stasis ulcers rarely resolve on their own without targeted medical treatment. You should contact a qualified provider promptly if you notice an open sore on your lower leg that does not heal within two weeks, if swelling worsens, or if you develop warning signs of infection, such as spreading redness, fever, increased pain, or foul-smelling drainage. Early clinical intervention protects delicate tissues and significantly reduces healing time.