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Published byRandolf Walters Modified over 9 years ago
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Classification and other evaluations in DDH
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Graf’s standard coronal section through the deepest part of the acetabulum illustrating key structures (A), the angle (B), and the femoral head coverage (C).
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Rosendahl’s modification of the Graf classification based on the standard coronal section: A, normal, 60°; B, immature, 50° <60°; C, mild dysplasia 43° <50°; D, significant dysplasia, <43°.
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On the basis of the AI, the hips were radiographically classified as normal (A), having delayed acetabular ossification (B), or dysplastic (C).
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Severin,s classification system C E angle 19 degreeIaClass I 16 degreeIbNorma 19 degreeIIaClass II 15 – 19 degreeIIbModerate deformity 15 degreeIIIaClass III IIIbDysplasia without subluxation 0IVaClass IV 0IVbSubluxation PseudoacetabulumClass V RedislocationClass VI
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1. Hip stable in neutral position—no osteotom 2. Hip stable in flexion and abduction innominate osteotomy 3. Hip stable in internal rotation and abduction—proximal femoral derotational varus osteotomy 4. “Double-diameter” acetabulum with anterolateral deficiency—Pemberton-type osteotomy
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A-one-stage-open-reduction-with-salter-s-innominate- osteotomy-and-corrective-femoral-osteotomy-for-the- treatment-of-congenital-dysplasia-of-the-hip
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