Surgeons are particularly exposed to lawsuits. Most will be threatened or confronted with litigation several times during their career. The surgeon can be held directly and personally liable during a penal procedure. Civil jurisdictions oversee expert evaluation in cases involving self-employed and salaried surgeons in private practice. An administrative structure for expert evaluation is set up for surgeons working in the public sector. The law of March 4, 2002 has set up a new structure with commissions for reconciliation and compensation of medical accidents (CRCI); these apply to all surgeons. It is essential that the practitioner prepare himself fully, studying both the patient dossier and the pertinent medical literature in order to participate in an expert evaluation under the best circumstances and to justify the diagnostic and therapeutic measures taken. The surgeon may be accompanied by legal counsel and an expert medical witness, but he should not abdicate all responsibility for testimony to them; he, as the treating physician, has the fullest knowledge of the medical case and can best respond to the expert's interrogation. This behavior also demonstrates both responsibility and respect to the patient and his family.