A maker can be liable when a product did not cause the accident but did make the injuries worse.

"Crashworthiness" is most often discussed with vehicles, but the idea reaches any product expected to protect people when something goes wrong. "Crash" does not just mean a traffic collision; it points to a foreseeable impact or failure event. "Worthy" means reasonably safe under those conditions, not perfectly injury-proof. "Doctrine" signals a legal rule: under product liability law, an injured person may bring a claim for enhanced injuries caused by a defective design, weak structure, failed restraint system, or other safety feature that should have reduced harm.

That matters because the case is not limited to asking who caused the initial wreck or incident. A manufacturer may still face a defective design or failure to warn claim if the product turned a survivable event into a catastrophic one. In practice, these cases often depend on careful medical proof, engineering analysis, and separating the original injury from the additional harm caused by the defect.

In Hawaii, crashworthiness issues can overlap with auto claims. Hawaii's no-fault system under the Motor Vehicle Insurance Law, Haw. Rev. Stat. Chapter 431:10C, requires PIP coverage, which may pay basic medical and wage-loss benefits first. But a crashworthiness claim against a manufacturer is a separate path, aimed at the added injuries caused by the unsafe product rather than the collision alone.