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Table 3 Results according to Severin classification for radiographic evaluation

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

Severin (%) Young Middle Older Total
 Ia 94(45.6) 196(34.5) 8(9.7) 298(34.5)
 Ib 36(17.5) 158(27.8) 13(15.9) 207(23.9)
 II 42(20.4) 177(30.7) 8(9.7) 227(26.3)
 III 25(12.1) 31(5.4) 13(15.9) 69(8.0)
 IV 9(4.4) 8(1.4) 6(7.3) 23(2.7)
 V 0 6(1.2) 21(25.6) 27(3.1)
 VI 0 0 13(15.9) 13(1.5)