Final answer:
The priority nursing goal following cast application for a 2-month-old child in bilateral leg casts for congenital clubfoot should be to maintain tissue perfusion.
Step-by-step explanation:
The priority nursing goal following cast application for a 2-month-old child in bilateral leg casts for congenital clubfoot should be to maintain tissue perfusion. This means ensuring that blood flow to the legs is not compromised, as decreased blood flow can lead to tissue damage or other complications.
Other goals, such as minimal pain, relieving muscle spasms, and managing mobility, are important but not as critical as maintaining tissue perfusion.