In the hallway of Shriners Children’s™, Arlo races down the carpeted corridor at full speed, arms pumping at his sides, face focused and determined. At the end of the hall, his parents, Emily and Tyler, stand waiting with their phones out, trying to catch his exuberance on camera as he rushes past. 

Arlo is moving fast—but if you take a closer look you might notice a slight wobble in his gait as he takes off, as well as the brightly-colored, teal leg that helps propel him forward: a prosthetic leg courtesy of the same hospital whose hallways he’s speeding down. 

For as long as he can remember, Arlo has been running through the hallways at Shriners Children’s, testing out his “leggys”—the nickname he’s given his prostheses—after every new fitting. And for equally as long, Emily and Tyler have been there to film his first test-drive. Each run is a celebration of his determination and joy, but it’s also a testament to a milestone that, when Arlo was born, neither of his parents were sure he would reach. 

Finding the right path 

Immediately after birth, Arlo was diagnosed with a condition called fibular hemimelia, a rare condition........

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