Primary cementless total hip arthroplasty with an alumina ceramic-on-ceramic bearing: results after a minimum of twenty years of follow-up. - Petsatodis GE; Papadopoulos PP; Papavasiliou KA; Hatzokos IG; Agathangelidis FG; Christodoulou AG; Petsatodis, George E; Papadopoulos, Pericles P; Papavasiliou, Kyriakos A; Hatzokos, Ippokratis G; Agathangelidis, Filon G; Christodoulou, Anastasios G (Journal of Bone & Joint Surgery, American Volume, 2010)