Is there a difference between "anatomic" and "anatomical"?
There is no difference in meaning or usage aside from regional preferences. The first online dictionary I checked simply redirected "anatomic" to "anatomical".
If you are curious about specific usage comparisons you can use Google's NGram viewer:
- anatomic versus anatomical
- anatomic context versus anatomical context
- common words following anatomic
- common words following anatomical
Short summary, "anatomical" is much more common.