Effect Of The Use Of Navigation In The Alignment Obtained When Performing A Total Knee Arthroplasty In Obese Patients

Inclusion Criteria: * Men and women over 18 years old. * Written informed consent according to ICH / GCP and Spanish legislation, obtained before any study procedure. * Patient with a BMI equal to or greater than 30 Kg / m2 * Patients with clinical and radiological criteria of knee osteoarthritis. * Patients with indication for primary TKA according to medical criteria. Exclusion Criteria: * Pregnancy or lactation. * Inability to give informed consent in the absence of a legal representative. * Subjects that are participating in a study with medicines or other medical devices. * Those who show inability to follow the instructions or collaborate during the development of the study. * If in the opinion of the researcher there are findings in the physical examination, abnormalities in the results of the clinical analyzes or other medical, social or psychosocial factors that could have a negative influence * Having had a previous surgical procedure on or around the knee in the last 12 months (such as proximal tibial osteotomy, femoral osteotomy, open reduction and internal fixation for a fracture, patellectomy or patellar realignment). * Need a simultaneous bilateral TKA. * Have a varus angle or valgus ≥ 15 °. * Total revision knee arthroplasty.