Who is Landon Sparks from First, Do No Harm and what is their importance?

Landon is the child of Kenny and Claire Sparks. He has a severe case of spina bifida, a condition whether the spinal cord splits in two during development. The body does not cover the spine, leaving it exposed. This leads to numerous health problems. After a torturous period of debate, Claire and Kenny give Landon the surgery that will cover his exposed spine, and raise him. He cannot do much of what other children can do, but he can sit up, talk and eat.