And now, Mia has had her long-planned surgery.

The little girl was born with a rare condition which affected her left leg and the best option for her was life-changing surgery in the USA, but that prospect came with a hefty cost attached.

Mia’s family, friends and many generous people who had never even meet the curly-haired four-year-old raised more than $300,000 to get her to Florida to have the specialist surgery.

She has a congenital femoral deficiency, a condition that caused her hip and femur to be underdeveloped at birth, her mother Leila Bright has told The Daily Advertiser.

Mia uses a prosthesis on her left leg, as it is significantly shorter than her right one. 

The goal of the surgery was to make long-term improvements in Mia’s mobility.

“The easiest way to describe it is her leg will be turned around to face backwards, her foot will face backwards and her ankle will act as a knee joint,” Ms Bright said before the family headed overseas on December 30.

“They will create a somewhat functioning hip joint from what is there and then she will be treated prosthetically.” 

In a series of Facebook posts on the Mia’s Big Adventure page, Ms Bright has provided an update on Mia’s condition before and after the massive surgery.

During her surgery, Mia was operated on by three different surgeons, with each telling her family that their part of the procedure had gone as hoped.

“All in all I guess you could say things have gone well thus far. Well as in her foot is still pink, she can wiggle her toes, she managed a bit more food yesterday, we have been moved out of ICU and onto a more newly renovated ward. She’s coping as best as she can,” Ms Bright wrote.

“The frustrations are hard to watch and figuring out the best way to try and ease that for her because she’s only four, is honestly very tricky.

“The staff are great and have seen cases of all sorts before so in terms of their support and help it’s amazing, but again making a child understand that she’s safe and being cared for when she’s in a new environment with different faces every shift change is challenging.”

Mia and her family were able to enjoy some sightseeing, including a trip to Walt Disney World, between pre-surgery appointments.

The family will remain in the USA for some weeks yet as Mia recovers from her surgery and has follow-up therapy on her leg.

As she recovers, Mia has had three treatments in a hyperbaric chamber to help her surgical wound to heal more quickly.