Abstract
Objective
The purpose of this study was to determine if there is an anatomic relationship between pelvic geometry and acetabular depth.
Materials and methods
One hundred and fifty-one anteroposterior pelvic radiographs (157 hip joints) were selected and analyzed in a retrospective fashion. Six parameters, including iliac offset, ischial offset, acetabular offset, pelvic height, center-edge (CE) angle of Wiberg, and acetabular index (AI) angle of Tönnis were measured for each of the hip joints. Based on the defined variables, three formulas (formulas 1, 2, and 3) were calculated to represent the hemi-pelvis slope.
Results
There was a strong relationship between the hemi-pelvis slope and probability of acetabular dysplasia. Wider upper pelvis was associated with deeper acetabulum and wider lower pelvis was associated with dysplastic acetabulum.
Conclusions
Pelvic anatomic dimensions and the relationship between them are strongly correlated with hip dysplasia indices. Dysplastic hips tend to be found in pelvises with lower slope (low width of the upper pelvis at the level of iliac crest and high width of the lower part at the level of ischium).
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Sadeghi-Naini, M., Taghipour, S., Savadkouhi, A.G. et al. Hemi-pelvic slope is correlated with the acetabular depth in adults—a radiological study. Skeletal Radiol 47, 1119–1125 (2018). https://doi.org/10.1007/s00256-018-2892-x
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DOI: https://doi.org/10.1007/s00256-018-2892-x