How about a phantom arm?

This case study involves a congenital limb absence in which phantom sensation only appeared following an accident involving the end of the missing limb. The patient was an 18 year old female. She was born missing her left arm below the elbow. There were no phantom sensations up until two years before the examination and interview. The subject was horseback riding and fell off her horse onto the tip of her stump. Subsequently she started feeling that she had a full length phantom arm, hand and fingers. There is no pain associated with the phantom limb, but rather the sensation was reported as being pleasant. The phantom persisted continuously for about a year and then disappeared, only to reappear occasionally. She is able to move her fingers and can use them for counting. The intensity of the phantom when it is felt is as vivid as it was when it first appeared. The intensity has not faded over the years, but only the duration.