From: Analyses of outcomes of one-stage operation for treatment of late-diagnosed developmental dislocation of the hip: 864 hips followed for 3.2 to 8.9 years
Kalamchi (%)
Young
Middle
Older
Total
Absent
89(43.3)
393(68.3)
12(14.7)
494(57.2)
I
46(22.3)
82(14.2)
5(6.1)
133(15.4)
II
38(18.4)
74(12.8)
24(29.3)
136(15.7)
III
25(12.1)
15(2.6)
26(31.7)
66(7.6)
IV
8(3.9)
12(2.1)
15(18.2)
35(4.1)