According to my research, it seems "a check-up" is often refereed to a complete **whole-body **check-up (ears, eyes, lungs, blood test etc).
I am not sure if "a check-up" can be used for some part of our body (like legs, ear, eyes etc) separately.
I googled "gave my leg a check-up" but I don't see many results or too few results.
So I think native people don't often say that way. They probably say something else.
Can "a check-up" be used for some part of our body (like legs, ear, eyes etc) separately?