| Recruiting | 4 | 300 | Europe | The patients in experimental group will be genotyped before surgery and treatment will be prescribed according to the CYP2D6 phenotype, Tramadol 100 mg, Tramadol 50 mg, Dexketoprofen 25 mg | Fundación de Investigación Biomédica - Hospital Universitario de La Princesa, Hospital Universitario La Paz, Hospital Universitario Ramon y Cajal, Hospital Universitario Fundación Jiménez Díaz, Hospital Universitario San Juan de Alicante, Hospital Universitario de Burgos, Hospital San Carlos, Madrid, Puerta de Hierro University Hospital | Post-surgical Pain, Pain, Acute, Postoperative Pain | 12/23 | 12/23 | | |