Skip to main content

Table 4 Comparison of baseline and clinical outcome of conversion THA group and primary THA group

From: Porous tantalum rod implantation is associated with low survival rates in patients with type C2 osteonecrosis of the femoral head but has no effect on the clinical outcome of conversion total hip arthroplasty: a retrospective study with an average 8-year follow-up

Characteristics Conversion THA Primary THA p
No. of hips 12 57
Age (year, mean ± SD, [range]) 44.0 ± 10.0 (31–63) 42.7 ± 13.7 (20–71) p = 0.97
Gender (female/male) 4/8 25/32 p = 0.78
Follow-up time (year, mean ± SD, [range]) 66.9 ± 31.7 75.4 ± 14.9 p = 0.15
Etiology    p = 0.42
 Alcohol 3 13
 Corticosteriod 8 37
 Idiopathic 1 17
ARCO stage    p = 0.71
 Stage III 2 15
 Stage IV 10 42
JIC classification    p = 0.51
 Type C1 5 18
 Type C2 7 39
HHS (Median (P25-P75))
 Pre-op 56 (50–59) 56 (42–66) p = 0.41
 36 months Pos-op 91 (87–94) 94 (85–98) p = 0.31
 60 months Pos-op 88 (85–93) 92 (88–96) p = 0.09