Medial Aspect of the Ischio-pubic Ramus Orientation
To assess the medial aspect of the ischio-pubic ramus, the symphyseal face should be held perpendicular to the viewer. The superior and inferior borders of the symphyseal face should be aligned vertically. To asses this trait the region below the inferior edge of the symphyseal face to the approximate mid-region of the ramus should be considered.
Trait Scoring
Character states for the MA (from left to right: Score 1 to Score 5)
Medial surface of the pubic bone is showing with the symphyseal face aligned vertically
Left innominate, posterior side on left
Medial surface of the pubic bone is showing with the symphyseal face aligned vertically
Left innominate, posterior side on left
Score 1
Ascending ramus is narrow dorso-ventrally with a sharp ridge of bone present below the symphyseal face
Ascending ramus is narrow dorso-ventrally with a sharp ridge of bone present below the symphyseal face
Score 2
Ascending ramus is narrow dorso-ventrally with a plateau/rounded ridge of bone present below the symphyseal face
Ascending ramus is narrow dorso-ventrally with a plateau/rounded ridge of bone present below the symphyseal face
Score 3
Ascending ramus is narrow dorso-ventrally with no ridge present
Ascending ramus is narrow dorso-ventrally with no ridge present
Score 4
Ascending ramus is medium width dorso-ventrally with no ridge present
Ascending ramus is medium width dorso-ventrally with no ridge present
Score 5
Ascending ramus is very broad dorso-ventrally with no ridge present
Ascending ramus is very broad dorso-ventrally with no ridge present
