Answer: Phantom limb pain (PLP)
Explanation:
Phantom limb pain (PLP) is defined as the continuous pain that occurs from the limb section in which limb is no longer present or it has been removed .Sensation of pain occurs in that missing area after the surgical treatment.This pain tends to becomes weaker according to time.
According to the question, removing the leg of Chris after accident causes pain and burning sensations to him. This describes about phantom limb pain.