8. For lower extremity ulcers: Adequate arterial blood flow as evidenced by an ankle brachial index (ABI) of > 0.70 and ≤ 1.2. If ABI > 1.2, perfusion at or near the site of the ulcer must be confirmed: i.e., the foot is warm to the touch and has palpable pulses. Availability of an ABI completed within the 90 days of Screening is acceptable.