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. 2015 Jun 23;9(3):191–198. doi: 10.1007/s11832-015-0665-9

Table 5.

The final radiographic outcome according to the Severin classification system [11]

Severin classification Number (%) of hips
Ia 20 (34.6)
Ib 19 (32.7)
II 3 (5.2)
III 1 (1.7)
IVa 2 (3.4)
IVb 11 (19)
V 2 (3.4)
VI