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Entries in Fingers (2)

Tuesday
Aug142012

Woman Regrows Missing Fingers in Phantom Form

iStockphoto/Thinkstock(NEW YORK) -- A woman born with eight fingers feels as if she has 10, oddly enough after losing a hand.

The 57-year-old woman, nicknamed "RN" in a new case study, was born with no right thumb or forefinger.  But after a car accident claimed her underdeveloped hand, she felt a five-fingered phantom in its place.

"A phantom is the vivid perceptual experience that a limb that's been amputated is still there," said Dr. Paul McGeoch at the Center for Brain and Cognition at the University of California at San Diego.  "They don't see it, but they feel it."

The strange and often painful sensation is thought to stem from the loss of sensory input to the brain.

"Even though the limb is gone, its representation in the brain remains," said McGeoch, describing how activity in neighboring brain areas sets off the sensation.  "That cross-activation generates the perception of a normal limb."

But the case of "RN" is curious.  Even though her thumb and forefinger failed to develop in the womb, her phantom had both.

"Her brain developed to represent her body as it was supposed to be: with five fingers instead of three," said McGeoch.  "The presence of her deformed hand was enough to suppress that representation.  But when the hand was removed, its influence on the representation was gone and the five fingers sprang forth.  They had always been waiting in the representation of her brain."

"RN's" phantom also came with "crushing and throbbing" pain, and her newly perceived thumb and index finger felt shorter than the rest.  But she could ease the pain and "elongate" the phantom fingers by using a mirror box, a device designed to trick the mind into seeing the phantom hand.

"Historically, phantom pain has been difficult to treat," said McGeoch, explaining how traditional painkillers tended to fall short.  "But the mirror box has shown to be effective by many trials over the years."

Copyright 2012 ABC News Radio

Tuesday
Dec142010

Surgeon Makes Fingers for Baby Born Without

Dr. William Seitz of Cleveland Clinic in Ohio. Photo Courtesy - ABC News(CLEVELAND) -- When Laura Azzopardi gave birth to her son, Gavin, three years ago, she did what many new parents do, counting his fingers and toes. Gavin had five toes on each foot, but was born with just a pinky and thumb on each hand. It was a congenital hand deformity, a condition with unknown causes.

Laura and her husband, Keith, were uncertain Gavin would ever have functional hands, until they found an article in People magazine. The article, A New Hand for Ryan, introduced the family to the groundbreaking work of Dr. William Seitz, an orthopedic surgeon at Cleveland Clinic in Ohio, who was building fingers for another young boy.

At just nine months of age, Gavin began a series of treatments and surgeries at Cleveland Clinic aimed at building him two hands that would eventually help him in everyday life.

Creating two additional fingers per hand would require transferring bone for what was to be his middle and ring fingers and reshaping it into index and middle fingers. The new bones were attached to metal lengthening devices which helped them grow.

The process has been long and arduous, but Dr. Seitz said he sees results in his work. After two years of treatment, he said, Gavin's new fingers are "tubes of skin and bone. They've got muscle attachments to them and they've got some tendon attachments and they move."

Gavin has responded well to the treatment. "He's pretty darn functional right now. There's not much he can't do," Dr. Seitz said.

Copyright 2010 ABC News Radio







ABC News Radio