Final answer:
A volar apex and dorsal deviation at a fracture site refer to a downward displacement and angulation towards the palm side and shifting towards the back of the hand, respectively.
Step-by-step explanation:
A volar apex refers to a fracture that has a downward displacement and angulation towards the palm side of the hand. Dorsal deviation at the fracture site means that the fractured bone has shifted towards the back of the hand. These terms are commonly used to describe fractures in the hand and wrist.