Children with upper extremity amputations or congenital conditions face unique challenges. These challenges evolve over time as they grow and develop. For pediatric congenital amputees, our team has fit myoelectric prosthetic devices on children as young as 1.5 years old. We aim to fit the first passive arm on our pediatric patients around the same time as the child is first able to sit, often referred to as the “fit with sit” approach. Research data shows that this is the stage of development where children are old enough to develop the strategies necessary to use an arm prosthetic and where they will be most likely to perceive their prosthetic as a normal and natural extension of themselves.