Orthopedist

n. doctor of orthopedics (branch of surgery dealing with deformities, diseases and injuries of the bones and joints)

Orthopedic surgery or orthopedics (also spelled orthopaedics, see below) is the branch of surgery concerned with acute, chronic, traumatic, and overuse injuries and other disorders of the musculoskeletal system. Orthopedic surgeons address most musculoskeletal ailments including arthritis, trauma and congenital deformities using both surgical and non-surgical means.
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Noun
1. a specialist in correcting deformities of the skeletal system (especially in children)
(synonym) orthopaedist
(hypernym) specialist, medical specialist

(n.)
One who prevents, cures, or remedies deformities, esp. in children.
  

An orthopedic surgeon.