I put more weight on having access to a horse's Vet record and old x-rays. A healed fracture would not be picked up on a PPE unless a person spent $1000.00 for full sets of x-rays. Horses being sold by unscrupulous owners and dealers can be 'buted' or injected just before the exam. [This recently happened to a friend of our buying a high priced cutting horse. His hocks had been injected and he was given pain medication and passed a PPE. He will never train or be shown without high-priced frequent injections and eventually that will not help.] I will always go for the horse's old Vet records. Anyone that does not want a buyer to look at them is hiding something.