**Question:** Bennet's Fracture involves

A. Distal Radius
B. Proximal Radius
C. Distal Ulna
D. Distal Radius and Ulna

**Core Concept:** Bennet's Fracture is a type of forearm fracture that occurs when the distal radioulnar joint is disrupted, mainly affecting the distal radius and ulna.

**Why the Correct Answer is Right:** Bennet's Fracture occurs when the bones in the forearm are broken, involving both the distal radius and ulna. This type of fracture disrupts the distal radioulnar joint, leading to instability and pain in the affected area. In this case, the correct answer is **D** as it includes both the distal radius and ulna, which are the primary bones involved in Bennet's Fracture.

**Why Each Wrong Option is Incorrect:**

A. Distal Radius (Option A) - While the distal radius is indeed involved in Bennet's Fracture, it is not the primary focus of the injury. The fracture occurs at the distal radioulnar joint, which involves both the radius and ulna.

B. Proximal Radius (Option B) - Proximal radius is incorrect as it refers to the upper part of the radius, not the site of the fracture. Bennet's Fracture occurs at the distal radioulnar joint, which involves the distal end of both the radius and ulna.

C. Distal Ulna (Option C) - Similar to Option B, the term "distal ulna" does not accurately represent the fracture site. Bennet's Fracture involves the distal radioulnar joint, which is located at the distal ends of both the radius and ulna bones.

**Clinical Pearl:** Bennet's Fracture is named after Sir James Bennet, a British surgeon who first described this type of fracture in 1895. This injury typically occurs due to a force applied to the forearm, such as in sports or accidents, leading to a dislocation of the distal radioulnar joint.

**Correct Answer Line:** D. Distal Radius and Ulna

**Why Each Wrong Option is Incorrect:**

A. Distal Radius (Option A) - While the distal radius is involved, the primary focus of Bennet's Fracture is the distal radioulnar joint, which is formed by the union of the distal ends of the radius and ulna bones.

B. Proximal Radius (Option B) - Similarly to Option A, the fracture site involves the distal radioulnar joint, not the proximal end of the radius.

C. Proximal Ulna (Option C) - As with Options A and B, the fracture site is at the distal radioulnar joint, which is formed by the union of the distal ends of the radius and ulna bones.