Orthopedics: a branch of medicine concerned with the...
correction or prevention of skeletal deformities.
But you're right about the etymology of orhtopedic: French orthop\ufffddique, from orthop\ufffddie orthopedics, from orth- + Greek paid-, pais child.
from online Merriam-Webster's.
Alex
Men never do evil so completely and cheerfully as when they do it from religious conviction. -- Blaise Pascal (1623-1662)