Amos' sessions often involved him sitting and playing with toys while Miss Walker manipulated his stomach.
"It must be quite hard to do it on children," said Mrs O'Rourke.
"I think that's where The Wiggles come in."
Mrs O'Rourke said she'd decided to bring Amos to the osteopath in conjunction with giving him medicine.
"We found it worked really well for him and it seemed to make him calmer," she said.
"I wanted to try to do something that was natural, rather than just loading him up on drugs."
It's the first ever National Osteopathy Awareness Week in New Zealand and osteopath Jonathan Paine, of Wanganui Osteopathy, thinks it's about time the they were better understood.
"As a profession we've always tended to hide our light under a bushel," Mr Paine said.
"It's 2014 now so we feel it's appropriate the profession gets out there."
Mr Paine, who is on the committee of the Osteopathic Association, said other countries had osteopathy awareness weeks, and it was about time New Zealand had one.
As part of the awareness week people can get free osteopath assessments at certain clinics around the country. Wanganui Osteopathy was the only one in Wanganui offering them, he said.
There are 407 registered and practicing osteopaths in New Zealand currently. Osteopaths first complete a Bachelor of Applied Science majoring in human biology, or a similar discipline and then a Master's degree in osteopathy at Unitec in Auckland.
Mr Paine said the difference between osteopaths and similar professions such as chiropractors and physiotherapists was that rather than taking a technique approach, they were "philosophically driven".
He said it was about not just treating the pain, but looking to what caused the problem and how to fix it.
"We look at how presenting problems interact with the rest of the structure. We don't look at it in isolation.
"Realistically osteopathy has the ability to treat anything that's any muscular or skeletal problem. Bones, joints, muscles."
Mr Paine's oldest patient was about 93.
He said there was a lot of misunderstanding around osteopathy and a lack of understanding about what osteopaths do.
"There a lot of ignorance even in the medical fraternity," he said.
One of the biggest misunderstandings was that they just treated bones, he said.
"That's not the case."
General practitioner Mark McKenzie believed it was important for GPs and osteopaths to work together on a patient.
"It's very much a team sort of approach."
Dr McKenzie said it was about introducing people to "better self care". "It's learning to look after yourselves and using the expertise the good people have to offer."
