The femur (thighbone) is the largest and strongest bone in the body. It can break when a child experiences a sudden forceful impact. The most common cause of [femur fractures in infants](/orthopedic-surgery/pediatrics/femur-fractures-children) under 1 year old is child abuse. Child abuse is also a leading cause of thighbone fracture in children between the ages of 1 and 4 years, but the incidence is much less in this age group.



 

 ## Departments and Programs Who Treat This Condition

  department###  [Orthopedic Surgery (Pediatrics)](/departments/orthopedic-surgery/orthopedic-surgery-pediatrics) 

 A program within Orthopedic Surgery and Pediatric Specialty Care providing pediatric orthopedic care at a children’s orthopedic hospital for bone, joint, and muscle conditions in …