The assessment of which reflex would notably include the small toe?

The assessment of Chaddock's reflex involves the small toe and is specifically tested by stroking the lateral aspect of the foot, which can elicit a response in the toes, including extension or fanning of the small toe. This reflex is particularly useful in assessing the integrity of the corticospinal tract.

In contrast, Oppenheim's reflex also evaluates the corticospinal pathway, but it is elicited by applying pressure along the shin, typically watching for extension or movement of the big toe rather than the small toe. Gordon's reflex, which involves squeezing the calf, results in flexion of the toes and again would not specifically involve the small toe. The Babinski reflex, characterized by the fanning and extension of the toes in response to a stimulus caused by stroking the sole of the foot, is most prominent in infants and typically considers the response of the big toe rather than the smaller ones.

Thus, Chaddock's reflex is specifically recognized for including the small toe in its assessment, making it the correct choice in this context.