Virtual reality and the human limbs
A recent article in Science Daily notes that virtual reality is giving amputees the opportunity to regain any missing limbs. Through the use of a headset, patients are placed in a virtual world where they have 2 limbs. They control their missing limbs with any limbs that physically remain on their bodies. For example, in the virtual world, an amputated left arm movement can be manipulated by the amputees right arm.
Most amputees suffer from physical discomfort known as Phantom Limb Pain. However, using virtual reality and making one think s/he has and can move a missing limbs diminishes the pain. See virtual reality and amputees for more information.