Table 4.

Comparisons of our mechanical fixation failure rates with those of fixed-bearing cementless cups

Study	Grist-blasted cups % of mechanical fixation failures	Porous-coated cups % of mechanical fixation failures	Mean followup (years) or intervals of followup
Reikeras and Gunderson [28]	25%		7–10
Lai et al. [16]	38%		10
Miyakawa et al. [24]	31%		11–14
Kim et al. [15]	14%		7
Malchau et al. [20]		18%	6
Bohm and Bosche [3]		0%	11
Manley et al. [21]	11%	2%	7.9
D’Lima et al. [7]		6%	6
Bojescul et al. [4]		17%	15
Engh et al. [11]		0,4%	7–15
Garavaglia et al. [13]		0%	10
Vicente et al. [29]	12.3%	11.4%	10–12
Current study	3.7%	1%	7.7