The Role of Expert Witnesses in Personal Injury Litigation

There are many expert witnesses both sides can hire. But at the core what they provide is an opinion based on facts that are in the case file. They are often doctors, engineers, or accident reconstructionists. These experts testify about their opinions on what caused the accident, the extent of the client’s injuries, or the cost of future medical care. Their primary function is to translate complex, technical, or medical information into terms that a jury can understand, thereby strengthening the client's case by providing an informed viewpoint.

Often you’ll see the battle of the experts where the Plaintiff and Defendant each hire their own reconstruction expert, for example. They’ll have differing opinions based on the evidence presented to them. They must rely their opinions on facts and data that are "of a type reasonably relied upon by experts in the particular field" in forming opinions. This standard ensures that while expert opinions are based on specialized knowledge, they must still be grounded in reliable information sources, not mere speculation or conjecture, thus adhering to established evidentiary rules. That’s why it’s important for the attorney to give a cross examination that pokes holes at the credibility of the other side’s expert. So the Jury can be guided on who they should be looking towards.