A fracture in which the bone is broken into more than two fragments is classified as which type?

Question

Accepted Answer

D. Comminuted fracture. ## Fracture Classification by Fragment Pattern

**Key Point:** A comminuted fracture is characterized by the bone breaking into three or more fragments, creating multiple bone pieces at the fracture site.

### Definition and Clinical Significance
Comminuted fractures represent a high-energy injury pattern with significant soft tissue damage and poor prognosis for healing compared to simple fractures. The multiple fragments compromise the structural integrity and make reduction and fixation more challenging.

### Comparison with Other Types

| Fracture Type | Number of Fragments | Characteristics | Prognosis |
| --- | --- | --- | --- |
| Simple (Closed) | 2 | Bone broken into 2 pieces; skin intact | Better |
| Comminuted | >2 | Multiple fragments; high-energy trauma | Worse |
| Compound (Open) | Variable | Bone communicates with skin; infection risk | Guarded |
| Pathological | Variable | Underlying bone disease (osteoporosis, metastases) | Depends on cause |

**High-Yield:** Comminuted fractures are associated with:
- High-velocity trauma
- Crush injuries
- Gunshot wounds
- Increased soft tissue injury
- Higher infection risk if open
- Delayed union or nonunion

**Clinical Pearl:** Comminuted fractures of long bones (femur, tibia, humerus) often require operative fixation with plates, intramedullary nails, or external fixation rather than conservative management.

**Mnemonic:** **COMM** — **C**omminuted = **M**ultiple fragments (more than 2).

![Fracture Classification — Types and Patterns diagram](https://mmcphlazjonnzmdysowq.supabase.co/storage/v1/object/public/blog-images/explanation/3221.webp)

Answer

A. Pathological fracture

Answer

B. Simple fracture

Answer

C. Compound fracture

A fracture in which the bone is broken into more than two fragments is classified as which type?

Explanation

Fracture Classification by Fragment Pattern

Definition and Clinical Significance

Comparison with Other Types

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Fracture Type	Number of Fragments	Characteristics	Prognosis
Simple (Closed)	2	Bone broken into 2 pieces; skin intact	Better
Comminuted	>2	Multiple fragments; high-energy trauma	Worse
Compound (Open)	Variable	Bone communicates with skin; infection risk	Guarded
Pathological	Variable	Underlying bone disease (osteoporosis, metastases)	Depends on cause