The FDA and the spine surgeon.
Ducker
T B
TB
D018795:Device Approval / Q000331:legislation & jurisprudence*; D004867:Equipment Design; D006801:Humans; D016268:Internal Fixators / Q000145:classification / Q000592:standards*; D012449:Safety; D013131:Spine / Q000601:surgery*; D009626:Terminology as Topic; D014481:United States; D014486:United States Food and Drug Administration / Q000331:legislation & jurisprudence*