March 2021 marked the first centenary of the publication of Fidel Pages Mirave's seminal article Anestesia metamerica in the Revista Espanola de Cirugia. Pages' knowledge of Bier and Tuffier's intradural (1889-1900) and Gil Vernet's sacral (1917-1918) techniques played a pivotal role in the development of the epidural anesthesia technique. Fidel Pages' extensive experience with treating the casualties of armed conflicts, his proficiency in French and German, and his vast knowledge of anatomy, physiology and pharmacology lie behind the accuracy with which he describes the different approaches, the different anesthetic solutions, or the different instruments used, and the indications, contraindications and complications associated with his technique. In the centenary of his article, we would like to thank Fidel Pages' for describing an anesthetic and analgesic technique that has improved the lives of so many patients. (C) 2021 Sociedad Espanola de Anestesiologia, Reanimacion y Terapeutica del Dolor. Published by Elsevier Espana, S.L.U. All rights reserved.