Presentation: The relationship between the long axis of the fetus and the long axis of the maternal birth canal. Thus presentation can be longitudinal (anterior or posterior) trasnsverse or (rarely) vertical.
Position: That surface of the maternal birth canal to which the fetal vertebral column is applied. Thus position can be dorsal, ventral, lateral (right or left)
Posture: The disposition of the extremities(neck and limbs), relative to the body of the fetus.
Sholuder flextion
Sholuder flextionCarpal flexion
Hock flexion
Anterior presentation Dorsal position Downward deviation of the head With extension the for limb in the birth canalAnterior presentation Dorsal position Bilateral shoulder flection
Posterior presentation Dorsal position Bilateral hip flection
Posterior presentation Dorsal position Extension the hind limb in the birth canalAnasarca Calf
Arthrogryposis (Ankyloses)Diprosopus (Double head)
Schistosomus ReflexusSchistosomus Reflexus
Monocephalus tetrapus tetrabrachiusCyclopia
four kittens joined in the pelvic region.