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.

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He successfully returned to the game after treatment, but in May 2003 he was put on dialysis three times a week due to deterioration in his kidney function, with the treatment's side effects leaving him with severe nerve damage in his feet and legs.

CNN: Rugby legend Lomu set to make shock comeback