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

Options

A. Hip joint
B. Knee joint
C. Shoulder joint
D. Ankle joint.

Answer

**Step-by-Step Solution:**

1. **Understand the Question**: The question asks for the largest synovial joint among the given options: hip joint, knee joint, shoulder joint, and ankle joint.

2. **Define Synovial Joint**: A synovial joint is a type of joint that connects two bones and is characterized by a joint cavity filled with synovial fluid. This fluid lubricates the joint and allows for smooth movement.

3. **Analyze Each Option**:
- **Hip Joint**: This joint connects the femur (thigh bone) to the pelvis and allows for a wide range of motion but is not the largest.
- **Knee Joint**: This joint connects the femur to the tibia and fibula and is known to be the largest synovial joint in the human body.
- **Shoulder Joint**: This joint connects the humerus (upper arm bone) to the scapula (shoulder blade) and is more mobile but smaller than the knee joint.
- **Ankle Joint**: This joint connects the tibia and fibula to the talus bone of the foot and is smaller than the knee joint.

4. **Conclusion**: After analyzing all options, it is clear that the knee joint is the largest synovial joint in the human body.

5. **Final Answer**: The correct answer is (b) Knee joint.

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