DermACELL AWM® in Chronic Wagner Grade 3/4 Diabetic Foot Ulcers

This clinical evaluation with DermACELL AWM will explore its use in the treatment of complex
soft tissue defects involving muscle, fascia, tendon, or bone exposure (Wagner Classification
3 and 4).

A total of 50 subjects will be treated with DermACELL AWM in the operating room for coverage
of deep soft tissue defects in the lower extremity. Subjects will then be followed in the
outpatient clinic for up to 16 weeks.

The specific aim of the study is to assess the ability of the product to sustain an optimal
dermal layer. The time (days) required for wound bed preparation (granular bed after
placement of DermACELL AWM) and safety data will be collected.

Inclusion Criteria:

- Wagner Grade 3 or 4 complex soft tissue defect that extends below subcutaneous tissue
(exposed fascia, ligament, tendon, muscle, or bone)

- target wound that is either acute or chronic (nonhealing wounds greater than 4 weeks
but not greater than 1 year in duration)

- target wound that is not amendable to primary closure

- target wound deemed without any residual infection (as assessed by Investigator) or is
being treated upon entry into the clinical trial

- adequate perfusion to the extremity

- laboratory assessments which represent a good potential for wound healing (liver and
kidney function, nutritionally stable and diabetes control)

Exclusion Criteria:

- untreated infection of soft tissue or bone

- untreated autoimmune connective tissue disorders

- body mass index (BMI) of ≥ 50

- undergoing chemotherapy/radiation therapy or taking an immunosuppressant medication

- active liver disease (e.g. hepatitis A-G),

- have undergone previous wound care therapy that included any bioengineered alternative
tissue or STSG 30 days prior to enrollment

- pregnant

- enrolled in any other interventional clinical research trial

- an increase or decrease of more than 25% in wound area or volume from the Screening to
Baseline visit.