What is the minimal ankle-brachial index value associated with healing after amputation?

What is the minimal ankle-brachial index value associated with healing after amputation?

• A. 0.25
• B. 0.60
• C. 0.45
• D. 0.90

Answer: (C)

Healing after amputation relies on adequate arterial inflow to the residual limb, which the ankle-brachial index measures. An ABI around 0.45 represents the lower bound at which sufficient perfusion is typically available to support stump healing. Values well below this indicate poor blood flow and a high risk of nonhealing, while higher values—such as 0.60 or 0.90—show better perfusion but do not define the minimal threshold. So, the minimal ABI value associated with healing is about 0.45.

Healing after amputation relies on adequate arterial inflow to the residual limb, which the ankle-brachial index measures. An ABI around 0.45 represents the lower bound at which sufficient perfusion is typically available to support stump healing. Values well below this indicate poor blood flow and a high risk of nonhealing, while higher values—such as 0.60 or 0.90—show better perfusion but do not define the minimal threshold. So, the minimal ABI value associated with healing is about 0.45.