Ulcer of the Lower Extremity

Ulcers of the lower extremity are chronic wounds characterized by disruption of the skin and underlying tissues in the legs and feet. These ulcers can arise from various causes and typically present as difficult-to-heal, recurrent wounds. extremity ulcers are particularly associated with diabetes, venous insufficiency, peripheral arter disease and immobility such as conditions. These wounds significantly reduce patients’ quality of life important and, if left untreated, can lead to serious complications road.

Lower extremity ulcers are classified according to their etiology. The most common ulcer types include venous ulcers, arterial ulcers, diabetic ulcers and pressure ulcers (decubitus ulcers). Each ulcer type has distinct pathophysiological mechanisms and therefore requires different treatment approaches.

Venous ulcers are the most frequent type of lower extremity ulcer and typically occur on the lower leg, especially around the medial malleolus (inner foot ankle). Venous insufficiency is the primary cause of these ulcers. Venous insufficiency impairs the return of blood from the legs to the heart, leading to venous hypertension. This situation results in tissue edema, inflammation and ultimately ulceration.

Arterial ulcers develop due to peripheral arterial disease (PAD). These ulcers commonly appear on the toes, heels or edges of the foot. Arterial ulcers arise from inadequate blood perfusion and reduced nutrient delivery to tissues. They are typically painful and characterized by necrotic tissue.

Diabetic ulcers result from diabetic neuropathy and peripheral vascular disease disease. These ulcers most often occur on the sole of the foot or toes. In diabetic patients, loss of sense sensation may prevent detection of injuries, creating conditions favorable for ulcer development. Diabetic ulcers are severe wounds with a high infection risk.

Pressure ulcers occur in areas subjected to prolonged pressure, particularly in patients with movement mobility limitations due to immobility. These ulcers commonly develop at bony prominences such as the heels, ankles and hips. Pressure ulcers result from tissue ischemia and necrosis.

In the development of lower extremity ulcers, vascular damage and disruptions in the healing process play a central role. Ulceration typically arises from impaired tissue perfusion, inflammation, infection and inadequate cellular repair mechanisms. In venous ulcers, increased capillary pressure due to venous hypertension leads to edema and inflammation in tissues. In arterial ulcers, insufficient blood flow results in ischemia and necrosis.

Ulcer healing is a complex process involving mechanisms such as cellular proliferation, angiogenesis and matrix synthesis. In chronic ulcers, these processes are impaired. Particularly in diabetic patients, hyperglycemia disrupts cellular function and delays healing. Infections and inflammation also negatively affect the healing process.

Lower extremity ulcers commonly present with symptoms such as pain, swelling, redness and discharge. The appearance and symptoms of ulcers vary according to their etiology. Venous ulcers are typically superficial with irregular borders. Arterial ulcers are deep, well-demarcated and characterized by necrotic tissue. Diabetic ulcers are often surrounded by callus and prone to infection.

Lower extremity ulcers, especially diabetic ulcers, carry a high risk of infection. Signs of infection include redness, swelling, increased warmth, discharge and foul smell. Infection delays ulcer healing and increases the risk of systemic infection.

The diagnosis of lower extremity ulcers is established through clinical examination and laboratory tests. A detailed story history must be obtained and a physical examination performed to determine the ulcer’s etiology. Underlying conditions such as venous insufficiency, peripheral arterial disease and diabetes must be investigated. In necessary cases, advanced investigations such as Doppler ultrasound, angiography and laboratory tests may be performed.

During physical examination, the location, size, depth and border characteristics of the ulcer are assessed. Vascular status indicators such as peripheral pulses, skin color and temperature are also evaluated. In diabetic patients, a sensory examination for neuropathy is essential.

Treatment of lower extremity ulcers is planned according to their etiology. The primary goal is to promote healing and prevent recurrence. Treatment approaches include wound care, infection control, pressure reduction and management of underlying conditions.

Wound care forms the foundation of ulcer treatment. Wound cleaning, debridement (removal of dead tissue) and appropriate dressing selection accelerate the healing process. Moist wound healing is one of the most effective modern wound care methods.

In infected ulcers, antibiotic therapy is required. Antibiotic selection should be based on culture and antibiogram results. In cases of systemic infection, intravenous antibiotic therapy is administered.

In the treatment of pressure ulcers, reducing pressure is essential. Special mattresses, cushions and orthoses may be used for this purpose. Frequent repositioning of patients is also important.

In the treatment of lower extremity ulcers, controlling underlying conditions is of great importance. In diabetic patients, glycemic control, in venous insufficiency, compression therapy and in peripheral arterial disease, revascularization procedures accelerate ulcer healing.