(A) Left occipitoanterior (LOA): fetal occiput is in left anterior quadrant of maternal pelvis.

(B) Left occipitoposterior (LOP): fetal occiput is in left posterior quadrant of maternal pelvis.

(C) Right occipitoanterior (ROA): fetal occiput is in right anterior quadrant of maternal pelvis.

(D) Right occipitoposterior (ROP): fetal occiput is in right posterior quadrant of maternal pelvis.

(E) Left sacroposterior (LSP): fetal sacrum is in left posterior quadrant of maternal pelvis.

(F) Shoulder presentation with fetus in transverse lie.

(G) Prolapse of umbilical cord with fetus in LOA position.

(From Clinical Education Aid No. 18. Used with permission of Ross Products Division, Abbott Laboratories, Inc., Columbus, OH 43216.)