knuckle joint

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A knuckle joint, also referred to as a hinge joint, is a type of articulation found in the human body that permits flexion and extension movements, allowing for bending and straightening actions. These joints are essential for various functions, including grasping objects and maintaining balance while walking or running. The term "knuckle joint" specifically refers to the joints located at the base of each finger, where the fingers connect to the hand.