Name the joint between femur and acetabulum.

Options

A. Gliding joint
B. Ball & socket joint
C. Pivot joint
D. Hinge joint

Answer

### Step-by-Step Solution:

1. **Identify the Bones Involved**: The question asks for the joint between the femur and the acetabulum.
- The femur is the thigh bone, and the acetabulum is a part of the hip bone that forms a socket for the femur.

2. **Determine the Type of Joint**: The options provided are gliding joint, ball and socket joint, pivot joint, and hinge joint.
- To answer this, we need to know the characteristics of these joints.

3. **Analyze the Structure of the Joint**:
- The acetabulum is a cup-shaped structure that fits the rounded head of the femur. This configuration allows for a wide range of motion in multiple directions.

4. **Conclusion**: Based on the analysis, the joint formed between the femur and the acetabulum is classified as a **ball and socket joint**.
- This type of joint allows for rotational movement and is a type of synovial joint.

5. **Final Answer**: The joint between the femur and acetabulum is called the **ball and socket joint**.