I don't have any specific algorythms, but I can tell you that standard practice throughout the United States is to NEVER remove a c-collar or backboard until they have been cleared by the physician with x-ray or CT scan. Now, I have seen physicians remove collars and boards without getting x-rays first, but this is risky, and in my opinion, bad practice. When this happens, I will chart that the physician, not me, was the one who removed the collar......