Spalding sign is seen in (AIIMS May 2012)
Maceration - is a process of aseptic autolysis which occurs when the dead child remains in the uterus for about 3 or 4 days surrounded by liquor amnii but exclusion of air.
a. Earliest sign - skin slippage in 12 hours
b. Robert's sign - appearance of gas shadow in heart chambers and great vessels, may appear in 12 hours
c. Spalding sign - Irregular over lapping of cranial bones on one another is due to liquefaction of brain and softening of the ligamentous structures supporting the vault. It usually appears seven days after the death DD of Spalding sign - extra uterine pregnancy with the fetus alive
d. Hyperflexion of the spine
i. Crowding of ribs with loss of normal parallelism.
ii. Overlapping of maternal spine with fetal spine on X ray.