sacroposterior position

sa·cro·pos·te·ri·or po·si·tion (SP),

a breech presentation of the fetus with the sacrum next to maternal sacrum or rotated pointing to the right (right sacroposterior, RSP) or to the left (left sacroposterior, LSP) sacroiliac articulation of the mother.
Farlex Partner Medical Dictionary © Farlex 2012

sa·cro·pos·te·ri·or po·si·tion

(SP) (sā'krō-pos-tēr'ē-ŏr pŏ-zish'ŏn)
A breech presentation of the fetus with the sacrum pointing to the right (right sacroposterior, RSP) or to the left (left sacroposterior, LSP) sacroiliac articulation of the mother.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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