Cartography of Allodynic and Hypoasthetic Territories Following TKA

Inclusion Criteria: * major patient benefit from a first setting operation of TKA (total knee arthroplasty) by standard medial arthrotomy * Patient signed an informed consent * Patients receiving social coverage Exclusion Criteria: * Patient not wishing to be part of the study, or unable to consent, * Patient under guardianship or deprived of his liberty * Patients with neuropathic pain in the territory concerned preoperatively * Patient who underwent TKA laying by a technique other than standard medial arthrotomy