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Fig. 3 | BMC Musculoskeletal Disorders

Fig. 3

From: The severity of developmental dysplasia of the hip does not correlate with the abnormality in pelvic incidence

Fig. 3

a M-SEP is defined as the midpoint of the sacral end plate from the anterior-posterior (AP) and superior-inferior (SI) directions. M-FHC is defined as the midpoint of both femoral head centers from the medial-lateral (ML) direction. b The PI angle is defined as the angle between the line perpendicular to the sacral plate at its midpoint, and the line connecting this point to the axis of the femoral heads, projected in the sagittal plane

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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