In any personal injury lawsuit, success is not simply proving defendant committed some act of negligence. It's not just proving you suffered injury. It's about linking the two in a way that shows causation.
In law, this is known as proximate cause. It's when an event is sufficiently related to a legally recognizable injury to be held as the cause. Attorneys may also examine the "cause-in-fact" element, which is weighed by the "but for" test. That is, "but for" the alleged negligence, the injury would not have occurred.
Even in cases where the facts seem relatively straightforward, it's important to have an experienced legal team that can help you present all the evidence in a way that meets the proximate cause criteria.