A: This potential client keeps focusing on the wrongdoing that was done to her mother. However, a good trial lawyer must always be able to prove medical negligence (wrongdoing), and that wrongdoing must have caused injury, and the injury must be significant and permanent. If the wrongdoing did not cause injury or aggravate a prior condition, it becomes impossible to prove "causation." In a medical malpractice case, each of those elements must be confirmed by a medical expert who has reviewed your mom's records. If any one of those elements is missing, I cannot bring a lawsuit on your mom's behalf.