Question

The knee joint is an example of-

• A. Ball and socket joint
• B. Hinge joint
• C. Pivot joint
• D. Gliding joint

Answer 1

The correct option is B

Hinge joint

The correct option is B.

Explanation of the correct option:

Hinge joint:

1. These are the joints that allow limited movement of the bones.
2. Hinge joints permit movements that only involve straightening and bending.
3. These joints are like the hinges of the door.
4. With these joints only back and forth movements are possible.
5. Examples of such joints are- elbow joint, knee joint, ankle, etc.

Explanation of the incorrect options:

Option A:

Ball and socket joint: Such joints permit the movement in all the directions because out of the two bones one is fitted into the space present inside the other bone.

Example- shoulder and hip joint.

Option C:

Pivot joint: These are the joints that allow the partial rotation of bones. These joints prefer the back and forth movement of bones.

Example- neck joint.

Option D:

Gliding joint: These joints permit free movement of two or more bones where there is no rubbing or crushing of bones.

Example- forearm to the wrist joint.

Figure showing various types of joints in human body: