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Table 1 Sagittal plane measurements

From: The analysis of sacrum and coccyx length measured with computerized tomography images depending on sex

Parameters Details
Anterior sacral length (ASL) The distance between sacrum promontory and the 5th sacral vertebra anterior-inferior
Posterior sacral length (PSL) The distance between 1st sacral vertebra posterior- superior of the sacrum and the 5th sacral vertebra anterior-inferior
Anterior sacrococcygeal length (ASCL) The distance between the 1st sacral vertebra anterior-superior of the sacrum and the last coccygeal vertebra anterior-inferior
Posterior sacrococcygeal length (PSCL) The distance between the 1st sacral vertebra posterior-superior of the sacrum and the last coccygeal vertebra anterior-inferior
Anterior sacral curvature length (ASC) The curvature length between sacrum promontory and the end of the 5th sacral vertebra
Posterior sacral curvature length (PSC) The curvature length between the sacrum posterior-superior and 5th sacral vertebra posterior-inferior
Anterior coccygeal curvature length (ACC) The curvature length between the coccyx anterior- superior and 5th sacral vertebra anterior-inferior
Posterior coccygeal curvature length (PCC) The curvature length between coccyx posterior- superior and 5th sacral vertebra posterior-inferior
Sacral area (SA) The sacrum area between the beginning of the 1st sacral vertebra and the end of the 5th sacral vertebra
Coccygeal area (CA) The coccyx area between the beginning of the 1st coccygeal vertebra and the end of the last coccygeal vertebra