Question

The largest synovial joint is
(a) Hip joint
(b) Knee joint
(c) Shoulder joint
(d) Ankle joint

Answer 1

Hint: The largest synovial joint is a type of hinge joint. This synovial joint is present in that part of the body which is often considered to be vulnerable towards the injuries and osteoarthritis.

Complete answer:
The knee joint is the largest synovial joint. It consists of various connections between four bones. In the knee junction, the large femur bone of the thigh will connect with both the tibia and fibula of the leg, and as well as with the patella, or knee cap.

So, the correct answer is, ‘Knee Joint’.

Additional Information:
A joint is a place where two bones contact each other to bring about various movements in our body. The type of joint present will decide the nature and the extent of movement. We can walk, we can run, we can write, speak, etc., which are all made possible only because of the involvement of various joints present in our body.
Joints are classified depending on their structural and functional aspects.
Structural classification of joints
Structurally joints are classified into three types.
- Fibrous joints
- Cartilaginous joints
- Synovial joints
The following table gives the structural classification, nature of movements along with the examples of these joints.

Structural classification of joints	Nature of these joints	Examples
Fibrous joints	Non- movable joints	The rib cage, upper jaw, the backbone
Cartilaginous joints	Partially movable joints	The Spinal cord
Synovial joints	Highly flexible joint	Neck joint, shoulder joint, knee joint

Functional classification: Depending upon the nature and extent of movement, joints are classified into ball and socket joint, pivotal joint, hinge joint, condyloid joint, gliding joint, and saddle joint.

Note: Since the synovial joint allows flexibility in movement, it is vulnerable to injuries. One such example is Rheumatoid arthritis where the immune system will attack the synovial fluid and causes damage to the bones.