Compound fracture is characterised by

Options

A. Breaking and cracking of bone at different places
B. Breaking bone into more than two fragments
C. Appearance of a number of cracks in the same bone
D. Protrusion of broken end of bone.

Answer

### Step-by-Step Solution:

1. **Understanding Fractures**: A fracture refers to a medical condition where there is a partial or complete break in the bone.

2. **Defining Compound Fracture**: A compound fracture, also known as an open fracture, is characterized by the bone breaking in such a way that the broken ends protrude through the skin.

3. **Characteristics of Compound Fracture**:
- **Breaking and Cracking**: In a compound fracture, the bone may break and crack at different places.
- **Multiple Fragments**: The bone can break into more than two fragments.
- **Protrusion**: The broken ends of the bone may protrude through the skin, which is a key feature distinguishing it from a simple fracture.

4. **Conclusion**: Among the characteristics mentioned, the most defining feature of a compound fracture is the **protrusion of the broken end of the bone** through the skin, as well as the breaking and cracking of the bone at different places.

5. **Final Answer**: The correct answer is that a compound fracture is characterized by **breaking and cracking of bone at different places**.