Tabella 4.19 - Number of primary surgeries in case of total replacement by dimension and material of the head - A.P. of Bolzano during the years - 2019 "";"Diameter of the head (mm)";;;;;;;;; "";"22";;"28";;"32";;"36";;">=38"; "Head material";"No.";"%";"No.";"%";"No.";"%";"No.";"%";"No.";"%" "Metal";2;28,6;43;12,6;14;0,5;47;0,9;15;1,9 "Ceramics";5;71,4;299;87,4;2807;99,5;5182;99,1;782;98,1 "Grand total";7;100,0;342;100,0;2821;100,0;5229;100,0;797;100,0 Note: * 1133 unidentified head measures www.provincia.bz.it/salute-benessere/osservatorio-salute/ Register of Pathology - Hip Replacement Processing by the Health Observatory - 05.06.2020