What kind of motion is possible with a hinge joint?

backward or forward

sliding

rotating

side to side

I believe that the answer is backward or forward.

Reason:

"A hinge joint is a common class of synovial joint that includes the ankle, elbow, and knee joints. Hinge joints are formed between two or more bones where the bones can only move along one axis to flex or extend" (aka backward or forward)

flexion and extension

Explanation:

Flexion is the bending and extension

the influence of daoism, buddhism, and legalism on chinese culture. unlike confucianism, daoism looked to nature rather than human beings as the source of morality. according to laozi, human society has to conform to the dao (the way), or the essential unifying element of all that is. some interpret dao as nature.