Legaye Jean, Duval-Beaupere Ginette, Barrau Andre, Boulay Christophe, Hecquet Jerome, Montigny Jean-Pierre, Tardieu Christine
Unity INSERM 215, Spinal Bio-mechanic, Garches, France.
Hip Int. 2011 Jan-Mar;21(1):87-97. doi: 10.5301/hip.2011.6283.
The importance of the sacral pelvic incidence (SPI) in relation to individual variations of sagittal spinal curvature has become well-recognised. We attempted to determine the relationship between SPI and acetabular orientation. The three-dimensional coordinates of 47 homologous points were observed on 51 adult anatomical pelvises (26 female and 25 male). The reference vertical plane was Lewinnek's anterior pelvic plane. 10 angular parameters and 11 linear parameters were defined and calculated. These were expressed both in absolute value (in millimetres) and in "acetabular unit" (relative to the mean value of the right and left acetabular rays). Mean values of the parameters were calculated for all pelvises and according to gender. There were two dominant parameters: the "sacral slope" and the "V pubic angle". "Acetabular tilting" was primarily dependent on the "sacral slope" and its intermediary on the "SPI", while "acetabular anteversion" dependent on the "V pubic angle" via the "angle of prow". It is recommended that positioning of the acetabular cup in total hip arthroplasty relates to anatomical parameters, and to the global sagittal balance of the pelvi-spinal unit.
骶骨盆倾斜度（SPI）与脊柱矢状面曲度个体差异之间的关系已得到充分认识。我们试图确定SPI与髋臼方向之间的关系。在51个成人解剖骨盆（26例女性和25例男性）上观察了47个同源点的三维坐标。参考垂直平面为Lewinnek的骨盆前平面。定义并计算了10个角度参数和11个线性参数。这些参数均以绝对值（毫米）和“髋臼单位”（相对于左右髋臼射线的平均值）表示。计算了所有骨盆以及按性别分类的参数平均值。有两个主要参数：“骶骨倾斜度”和“耻骨联合角”。“髋臼倾斜”主要取决于“骶骨倾斜度”，其间接取决于“SPI”，而“髋臼前倾角”则通过“髋臼前缘角”取决于“耻骨联合角”。建议在全髋关节置换术中髋臼杯的定位与解剖参数以及骨盆-脊柱单元的整体矢状面平衡相关。
