The carpal ligament was then carefully incised using a push technique.

Question

Identify parts of speech:

carpal = adjective
was = verb
carefully = adjective
push = verb
technique = noun

Answer 1

carpal = adjective yes
was = verb yes, it's an auxiliary (helping) verb; the whole verb is "was incised"
carefully = adjective no
push = verb no
technique = noun yes

Answer 2

carefully - adverb

push - noun

looked up in dictionary

Answer 3

The word "push" is usually either a noun or a verb -- or it can be something else in technical language depending on how it's used in a sentence. In your sentence, "push" is being used to tell what kind of technique, right? If a word is describing a noun, what is it?

Yes, "carefully" is an adverb -- it tells HOW the ligament was incised.