This operation is intended to restore bladder function to people with spina bifida, a congenital defect that causes nerve damage and a loss of sensation and muscle function below the waist.

ECONOMIST: Chinese ethics

When Dr. Lillehei was putting these patches in the children to close the ventricaluar septal defect, there's a critical nerve that runs right along that hole, and it's invisible.

CNN: Pacemaker pioneer now lives with device