Question

The joint that moves in one direction only.

Answer 1

Hinge joint / two bones open and close in one direction *like a door* such as the knee and elbow joints.

Answer 2

Answer:

Hinge Joint

Explanation:

Hinge joints allow movement in one direction, as seen in the knees and elbows. Pivot joints allow a rotating or twisting motion, like that of the head moving from side to side.