The supratrochlear foramen is a small hole located above the trochlea of the humerus of several mammals, it is found frequently in dogs and sometimes in humans, specially women and in the left humerus. It is covered by a layer of connective tissue.
It is not currently recognized with a Terminologia Anatomica name in human anatomy, but the term is still found in older texts and in discussing anatomical variation.
References
Supratrochlear foramen Wikipedia(Text) CC BY-SA