Hinge joint is `:`

Options

A. Elbow joint
B. Ankle joint
C. Interphalangeal joint
D. All

Answer

### Step-by-Step Solution:

1. **Understanding Hinge Joints**: A hinge joint is a type of joint that allows movement in one direction, similar to the way a door hinges open and close.

2. **Identifying Examples of Hinge Joints**: Common examples of hinge joints include:
- **Elbow Joint**: Allows bending and straightening of the arm.
- **Knee Joint**: Allows bending and straightening of the leg.
- **Interphalangeal Joints**: These are the joints between the bones of the fingers and toes that allow them to bend.
- **Ankle Joint**: Specifically, the tibial-talus joint, which allows for the up and down movement of the foot.

3. **Characteristics of Hinge Joints**:
- **Movement**: Hinge joints permit movement in one plane (flexion and extension).
- **Structure**: They are covered by cartilage and contain synovial fluid, which lubricates the joint for smooth movement.

4. **Conclusion**: Since hinge joints are present in the elbow, ankle, and interphalangeal joints, the correct answer to the question is that hinge joints are found in all of the mentioned options.

### Final Answer:
Hinge joint is present in the elbow joint, ankle joint, and interphalangeal joint. Therefore, the correct answer is "all".

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