All week, Dr Hilary has been bringing you his special reports from Birmingham's Children Hospital which is one fo the country's busiest kids hospitals.
Dr Hilary first met 16 month old Ruby Wood on Monday. Ruby has a condition called Apert Syndrome and affects only one in 100,000 babies. This means that her little sections of her skull, finger and toes are fused together.
Ruby has been very brave and has had 12 operations already and her last was on Monday when she had some shunts put it so that fluid which was trapped in her head can be released.
Her operation which was done by Mr Guirish Solanki who has operated on Ruby numerous times and says that she is such a fun little girl.
Ruby has had this operation before and unfortunately the operation wasn't successful as an infection developed.
48 hours after the operation is a crucial time as that when an infection is most likely to happen. Doctors gave Ruby a course of antibiotics to try and stop any infection happening. Luckily, no infection has developed and when Mr Solanki came around on Thursday on his rounds and he's really pleased with Ruby's progress.