Causalité juridique et imputabilité médicale : l’incidence de l’approche juridique du lien de causalité sur la pratique expertale en droit de la réparation du dommage corporel

Traditionally, a “direct and certain” causal link was required between fault and harm in order to engage an individual's compensatory liability. However, upon reading case law, it is possible to note that causality no longer necessarily has to be either direct or certain. Indeed, although the presence of a previous condition long enabled the exclusion of a direct link between a harmful event and its aftereffects, the French Court of Appeal (Cour de Cassation) now considers that pathological predispositions must no longer be taken into account (in respect of an exclusion or a reduction in the right to compensation) if these were latent, and only revealed by the harmful event. Similarly, on occasion the plaintiffs support their claims with bundles of evidence and arguments that can but force magistrates to set aside the absence of absolute certainty on a scientific level. Presumptions of accountability have even been put forward in some areas of personal injury compensation (traffic accidents and workplace accidents). The conduct and content of forensic expertises are then disrupted, both for the expert and for the victim's lawyer.