**Question:** One of the common fractures that occur during boxing by hitting with a closed fist is ?

A. Radial shaft fracture
B. Collarbone fracture
C. Lateral epicondylar fracture (Galeazzi fracture)
D. Scaphoid fracture

**Core Concept:** In boxing, fractures can occur due to the high impact and repetitive nature of hitting with a closed fist. These fractures are often caused by direct blows to bones and joints.

**Why the Correct Answer is Right:**
Collarbone (clavicle) fractures are common in boxers due to the repeated blows to the anterior chest wall. Collarbone (clavicle) fractures occur when the force applied to the clavicle is greater than its tensile strength, leading to a fracture.

**Why Each Wrong Option is Incorrect:**
A. Radial shaft fracture (radius) is less common in boxers as the radius is protected by the ulna and forearm muscles.
B. Collarbone fractures are more common than scaphoid fractures, which are typically caused by external rotation force. Scaphoid fractures are less common in boxers due to the clavicle fracture's more significant impact.
D. Scaphoid fracture occurs due to external rotation force, not the direct blows to the bones that occur in boxing, making it less common in this context.

**Clinical Pearl / High-Yield Fact:** Lateral epicondylar fracture (Galeazzi fracture) involves both the radius and the distal radius, whereas a simple collarbone (clavicle) fracture involves only the clavicle. This distinction is important for the correct diagnosis and management of these fractures in boxers.

**Correct Answer:** C. Lateral epicondylar fracture (Galeazzi fracture)

**Core Concept:** A lateral epicondylar fracture occurs when the force applied to the forearm bones is greater than their tensile strength, leading to a fracture of the radius and/or ulna.

**Why the Correct Answer is Right:** Galeazzi fractures are relatively rare in boxers but can occur due to the high-impact blows to the anterior chest wall. The force applied to the forearm bones is greater than their tensile strength, leading to a fracture of the radius and/or ulna.

**Why Each Wrong Option is Incorrect:**
A. Radial shaft fracture (radius) is less common than lateral epicondylar fracture (Galeazzi fracture) due to the specific mechanism of injury.
B. Collarbone (clavicle) fractures are more common in boxers, not lateral epicondylar fractures.
C. Scaphoid fracture occurs due to external rotation force, not the direct blows to the bones that occur in boxing, making it less likely in this context.

**Clinical Pearl / High-Yield Fact:** Galeazzi fractures are generally more severe than simple collarbone (clavicle) fractures and require surgical management in most cases.