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Table 2 The Crowe classification and degree of femoral head subluxation in the unilateral DDH patients

From: Coronal and sagittal spinopelvic alignment in the patients with unilateral developmental dysplasia of the hip: a prospective study

Crowe classification

Percentage of subluxation

N

I

27–47%

8

II

55–75%

5

III

77–96%

5

IV

100%

4

  1. DDH developmental dysplasia of the hip; N numbers