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. 2015 Sep 3;474(2):392–398. doi: 10.1007/s11999-015-4509-1

Table 1.

Demographic data for the study group and control group

Demographics Study group Control group p value
Number of patients 74 74
Mean age (years; range) (SD) 51 (25–75) (12) 52 (30–81) (12) 0.557
Male:female 50:24 50:24
Median followup (years; range) 8 (2–23) 10 (2–24) 0.162
Preoperative diagnosis
 Osteoarthritis 60 60
 Avascular necrosis 14 14
Implant design (stems)
 Synergy 34 34
 Echelon 16 16
 Spectron 4 4
 St. Michael’s 20 20
Implant design (cups)
 Reflection Cups 47 50
 R3 3 4
 St. Michael’s 20 20
 TM Cup 4
Implant fixation
 Hybrid 4 4
 Uncemented 70 70