Table 2.

Studies reporting long-term survivorship (mean followup ≥10 years) of patients with small diameter metal-on-metal THA

Studies and year	Patients (hips), special circumstances	Articulation	Bearing diameter (mm)	Mean followup (years; range)	Survivorship, revision for all causes
Grübl et al., 2007 [15]	73	Metasul	28	Minimum 10	99% at 10 years
Eswaramoorthy et al., 2008 [12]	82 (85)	Metasul	28	11 (10–12)	94% at 10 years
Neumann et al., 2010 [39]	93 (94)	Lubrimet	32	11 (10–12)	93% at 12 years
Park et al., 2010 [42]	37 (39), cementless titanium (n = 21) versus cemented matte iron alloy (n = 18) stems	Metasul	28	10 (10–12)	81% at 10 years; cementless stems–100% at 10 years; cemented stems–61% at 10 years
Saito et al., 2010 [45]	77 (90)	Metasul	28	12 (10–14)	94% at 12 years
Dastane et al., 2011 [10]	66 (69)	Metasul	28	13 (8–16)	92% at 16 years
Hwang et al. 2011 [19]	70 (78) age ≤ 50 years	Metasul	28	12 (11–14)	99% at 13 years
Migaud et al., 2011 [35]	30 (39) age ≤ 50 years	Metasul	28	13 (12–14)	100% at 12 years
Randelli et al., 2012 [43]	100 (138)	Metasul	28	13 (11–14)	98% at 5 years, 95% at 10 years, 94% at 14 years
Hwang et al., 2013 [20]	141 (180) age ≤ 56 years	Metasul	28	14 (12–18)	98% at 18 years
Innmann et al., 2014 [22]	91 (100) age ≤ 50 years	Metasul	28	12 (10–15)	91% at 13 years
Current study, 2015	258 (300)	M2a-Taper	28, 32	10 (2–19)	95% at 10 years, 92% at 15 years, 72% at 19 years