Tabella 4.16 - Percentage of total revision surgery by typology of articular coupling - A.P. of Bolzano during the years 2010 - 2018 "Articular coupling";"2016";"2017";"% Variation 2017/2016";"2018";"% Variation 2018/2017" "Ceramics-Ceramics";41,7;45,5;9,1;27,3;-40,0 "Ceramics - Polyethylene crosslinked";12,5;"-";"-";18,2;"-" "Metal-Polyethylene";12,5;9,1;-27,3;9,1;0,0 "Ceramics - Polyethylene";8,3;27,3;227,3;27,3;0,0 "K-M";4,2;"-";"-";"-";"-" "Metal- Polyethylene crosslinked";"-";9,1;"-";"-";"-" "Other combinations*";20,8;9,1;-56,4;18,2;100,0 "Totale";100,0;100,0;0,0;100,0;0,0 Note: * included unindentified articular couplings www.provincia.bz.it/salute-benessere/osservatorio-salute/ Register of Pathology - Hip Replacement Processing by the Health Observatory - 21.06.2019