A plaintiff’s personal injury case can go off the rails when the plaintiff’s medical experts offer opinions that conflict with one another. This may typically arise where one expert for the plaintiff opines that a particular injury was caused by the subject accident and yet another expert questions whether the injury is indeed related.

Under Pennsylvania Rule of Evidence 702, titled “Testimony by Expert Witnesses,” it is provided, that “a witness who is qualified as an expert by knowledge, skill, experience, training or education may testify in the form of an opinion” if the expert’s specialized knowledge is beyond that of a layperson and such knowledge will assist the jury to understand the evidence or determine a fact in issue.