How We Roll by Natasha Friend

Quinn is a teen who loves her family, skateboarding, basketball, and her friends, but after she's diagnosed with a condition called alopecia which causes her to lose all of her hair, her friends abandon her. Jake was once a star football player, but because of a freak accident―caused by his brother―he loses both of his legs. Quinn and Jake meet and find the confidence to believe in themselves again, and maybe even love.