 No large epidemiologic study has been performed concerning neuropathic post-surgical pain at this date. The principal aim of this study is to know the exact prevalence of NPSP, 3 and 6 months after the date of surgery. Only nine surgical procedures have been considered for the study, according to the previous data of literature andor the high frequency of practice. This is a prospective open epidemiologic study, performed in nine French university general hospitals, three anti-cancer university hospitals and many other general hospitals. The secondary endpoints are i to find a relationship by multivariate analysis between NPSP and a large number of clinicalbiological items quality of life, habits, treatments, drug abuse, psychicmental state, genome... collected preoperatively, ii to validate a self-completed version of a questionnaire already validated for discriminating the neuropathic feature of chronic pain DN4, and iii to assess the availability of the existing medical networks for the care of NPSP. 