Retroflexed Pasterns of an Overdue Fetus.

Retroflexed Pasterns of an Overdue Fetus.
This Holstein fetus was retained alive in uterus for 3 months past term. The rear pastern were retroflexed possibly due to uterine crowding as a result of a reduced amount of allantois fluid. Meconium staining indicates hypoxia.

Roberts JN (2009)