What is the general principle of limb fracture immobilization in the field?

• A. Realign fracture to normal anatomy before splinting
• B. Immobilize in the position found; use a splint; check distal circulation after immobilization
• C. Delay immobilization until evacuation
• D. Do not check distal circulation after immobilization

Answer: (B)

In the field, the priority is to prevent further injury by keeping the limb from moving and protecting nerves and blood vessels. Immobilize the limb in the position it’s found, using a sturdy splint that spans the joints above and below the fracture, and secure it well. After applying the splint, recheck distal circulation and function—look for pulses, skin color, warmth, cap refill, and any changes in sensation or movement—to ensure the splint isn’t compromising blood flow or nerve function.

Realigning the fracture before splinting is not done in the field because it can cause additional tissue damage and isn’t reliably safe without proper equipment and training. Delaying immobilization increases pain and the risk of further injury, and neglecting to check distal circulation after immobilization can miss a compromised blood flow.