Personal injury litigation is negligence law in its purest form: a defendant owed the plaintiff a duty of reasonable care, breached that duty, and thereby caused legally cognizable harm. The four elements -- duty, breach, causation, and damages -- look simple, but causation splits into actual cause (the harm would not have happened but for the conduct) and proximate cause (the harm was a foreseeable result), and each is separately contestable. Whether a duty existed at all can itself be a legal question that ends a case before a jury ever weighs the facts.

Fault-allocation doctrine drives the economics. Under comparative negligence, a plaintiff's own carelessness reduces recovery proportionally, and in modified regimes it bars recovery entirely once the plaintiff crosses a fault threshold. Defendants therefore invest heavily in shifting blame onto the plaintiff or third parties. Damages combine hard economic losses -- medical bills, lost earnings -- with non-economic pain-and-suffering awards that are inherently uncertain and jurisdiction-sensitive, and egregious conduct can add punitive damages. Because most claims resolve against a backdrop of insurance policy limits, the available coverage often frames the settlement more than the theoretical value of the injury.

Comparative-fault allocation is the valuation engine: every percentage point of plaintiff fault directly discounts recovery, and in modified-comparative jurisdictions crossing the threshold zeroes it out, so both sides fight over the fault split more than over whether an injury occurred. Insurance policy limits then cap realistic outcomes and can compress a strong liability case into a policy-limits settlement, while unpredictable non-economic and punitive damages widen the range on catastrophic-injury claims.