classification and other evaluations in ddh. graf’s standard coronal section through the deepest...
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![Page 1: Classification and other evaluations in DDH. Graf’s standard coronal section through the deepest part of the acetabulum illustrating key structures (A),](https://reader030.vdocument.in/reader030/viewer/2022032607/56649ebf5503460f94bca082/html5/thumbnails/1.jpg)
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 asnormal (A),having delayed acetabular ossification (B), ordysplastic (C).
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Severin,s classification systemC E angle
19 degree Ia Class I
16 degree Ib Norma
19 degree IIa Class II
15 – 19 degree IIb Moderate deformity
15 degree IIIa Class III
IIIb Dysplasia without subluxation
0 IVa Class IV
0 IVb Subluxation Pseudoacetabulum Class V
Redislocation Class VI
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1. Hip stable in neutral position—no osteotom2. 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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