Most paralegals and attorneys dealing with bone injury from alleged child abuse call requesting a pediatric orthopaedic surgeon (or, sometimes, an emergency medicine physician). Such specialists are most concerned with fixing their patients, not (usually) with determining how the child was injured.
In some cases, this may be the correct choice, but another specialty is implicated: child abuse and neglect pediatrics. These are specialized pediatricians who are fellowship-trained to determine which cases are, and which are not, abuse. They are uniquely qualified to analyze potential child physical (including internal, bruise, bone, neurologic, burn) injury, sexual injury, and death cases. As a bonus, these paralegals and attorneys are usually thrilled as child abuse and neglect pediatricians tend to be much less expensive than pediatric orthopaedic surgeons.