Table 4.

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

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