What does a Wagner Grade 4 Look Like?

Wagner Grade 4 diabetic foot ulcers involve localized gangrene affecting the toe, forefoot, or multiple toes. The tissue death may appear wet (with swelling, odor, discharge, and infection) or dry (blackened, mummified, and hard).

Clinical Significance

This level of ulceration represents a critical threat to limb viability. Immediate medical intervention is essential to avoid progression to Grade 5, where full-foot gangrene occurs. Treatments at this stage often include:

• Surgical debridement

• Partial toe or forefoot amputation

• Broad-spectrum antibiotics for infection

• Vascular studies or revascularization procedures

• Adjunctive therapies like hyperbaric oxygen therapy (HBOT) following surgical care

Common Risk Factors

Patients who develop Wagner Grade 4 ulcers frequently present with:

• Prolonged, uncontrolled diabetes

• Peripheral arterial disease (PAD)

• Diabetic neuropathy

• Delayed intervention at earlier wound stages

Visual Examples of Wagner Grade 4

Below are real-world images representing the appearance of Wagner Grade 4 diabetic foot ulcers. These are graphic but important visual references for clinicians, caregivers, and patients to identify the severity and act quickly.

When to Refer

If a patient presents with signs of gangrene, referral to a wound care and limb preservation team is crucial. Delay can lead to higher-level amputation and systemic complications.

SHS Spotlight: Wound Care Partnership That Prioritizes Outcomes

With more than 25 years of experience in wound care and hyperbaric program development, Shared Health Services equips hospitals and healthcare providers with the tools, clinical insight, and programmatic guidance needed to build successful wound care service lines.

Our role is to support your team with proven strategies and clinical expertise — the success is yours to own.

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