Tabella 4.15 - Percentage of primary surgeries in case of total replacement 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";64,9;60,0;-7,4;60,5;0,7 "Ceramics - Polyethylene";27,8;30,4;9,6;27,9;-8,3 "Ceramics - Polyethylene crosslinked";5,8;8,1;40,5;9,4;15,4 "Metal-Metal";0,3;"-";"-";"-";"-" "Metal-Polyethylene";0,2;0,5;147,5;0,1;-80,7 "Metal- Polyethylene crosslinked";"-";0,1;"-";0,1;-3,3 "Other combinations*";1,1;0,8;-25,8;2,1;147,1 "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