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- W2093984608 abstract "Background Three-dimensional computed tomography (3D-CT) eliminates the positioning errors and allows the clinician to more accurately assess the radiographic parameters present. To elucidate the 3D geometry of the acetabulum and the extent of hip subluxation/dislocation in patients with cerebral palsy (CP), quantitative morphometric analysis was performed using 3D-CT data. Methods We evaluated 150 hips in 75 patients with bilateral spastic CP. The mean age of the patients was 5.4 years (range: 2.7 to 6.9 y). The fitting plane of the ilium was projected onto the coronal plane and then onto the sagittal plane, and then the angle formed with a horizontal line was defined as CTα (the lateral opening angle) and CTβ (the sagittal inclination angle), respectively. The center of the acetabulum and the femoral head were defined, and the distance between these centers was divided by the femoral head diameter, defined as CT migration percentage (CTMP, %). Results In 123 (82%) of the 150 hips, the femoral head center was located posteriorly, superiorly, and laterally relative to the acetabular center. Large CTα cases tended to show large CTMP. CTα and CTMP were significantly larger in the cases with Gross Motor Functional Classification System (GMFCS) level IV/V and spastic quadriplegia, than in the cases with GMFCS level II/III and spastic diplegia. CTβ showed significant correlation with the acetabular defect on the lateral 3D reconstructed images. Conclusions Three-dimensional acetabular geometry and migration percentage in CP patients can be analyzed quantitatively using 3D-CT regardless of the abnormal spastic posture. The extent of acetabular dysplasia and subluxation is more severe in patients with GMFCS level IV/V and spastic quadriplesia. Level of Evidence Level 4." @default.
- W2093984608 created "2016-06-24" @default.
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- W2093984608 date "2009-12-01" @default.
- W2093984608 modified "2023-10-17" @default.
- W2093984608 title "Morphometric Analysis of Acetabular Dysplasia in Cerebral Palsy: Three-dimensional CT Study" @default.
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- W2093984608 doi "https://doi.org/10.1097/bpo.0b013e3181c0e957" @default.
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