mentoposterior position

men·to·pos·te·ri·or po·si·tion (MP),

a cephalic presentation of the fetus with its chin pointing to the sacrum or rotated to the right (right mentoposterior, RMP) or to the left (left mentoposterior, LMP) sacroiliac articulation of the mother.

men·to·pos·te·ri·or position

(MP) (men'tō-pos-tēr'ē-or pŏ-zish'ŏn)
A cephalic presentation of the fetus with its chin pointing to the right (right mentoposterior, RMP) or to the left (left mentoposterior, LMP) sacroiliac articulation of the mother.
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