Ischiopagi
Encyclopedia
Ischiopagi is the medical term used for conjoined twins
(Class V) united at the pelvis
.
It specifically describes a condition involving the fused lower half of the two bodies, with spines conjoined end-to-end at a 180° angle. Ischiopagic twins have four arms; two, three or four legs; and typically one external genitalia and anus.
Ischiopagus Tripus: the twins share three legs, the third leg is often two fused legs, or is non-functioning; only one set of external genitalia is common
Ischiopagus Tetrapus/Quadripus: the twins have four legs
Conjoined twins
Conjoined twins are identical twins whose bodies are joined in utero. A rare phenomenon, the occurrence is estimated to range from 1 in 50,000 births to 1 in 100,000 births, with a somewhat higher incidence in Southwest Asia and Africa. Approximately half are stillborn, and a smaller fraction of...
(Class V) united at the pelvis
Pelvis
In human anatomy, the pelvis is the lower part of the trunk, between the abdomen and the lower limbs .The pelvis includes several structures:...
.
It specifically describes a condition involving the fused lower half of the two bodies, with spines conjoined end-to-end at a 180° angle. Ischiopagic twins have four arms; two, three or four legs; and typically one external genitalia and anus.
Varieties
Ischiopagus Dipus: the twins share two legsIschiopagus Tripus: the twins share three legs, the third leg is often two fused legs, or is non-functioning; only one set of external genitalia is common
Ischiopagus Tetrapus/Quadripus: the twins have four legs