**Question:** Smith's fracture involves which bone -

A. Radius
B. Ulna
C. Patella
D. Clavicle

**Core Concept:** Smith's fracture is a specific type of forearm fracture that occurs between the middle and distal third of the radius, usually secondary to a low-energy trauma.

**Why the Correct Answer is Right:** Smith's fracture is named after Dr. James A. Smith, who first described this type of fracture in 1960. The correct answer, "radius," refers to the long bone in the forearm on the ulnar side (palmar side), which is responsible for bending the wrist and fingers. This fracture typically occurs due to a low-energy trauma, such as a fall onto a flexed wrist.

**Why Each Wrong Option is Incorrect:**

A. Radius (correct answer): This is the correct answer, as mentioned above.
B. Ulna: The ulna is the bone on the radial side (dorsal side) of the forearm. It is not involved in Smith's fracture.
C. Patella: The patella is the kneecap and does not play a role in Smith's fracture.
D. Clavicle: The clavicle is the collarbone and is not a part of the forearm, so it is not involved in Smith's fracture.

**Clinical Pearl:** Smith's fracture is a common injury among elderly patients, often due to falls from standing height. Proper immobilization and fracture management are essential to avoid complications, such as malunion or non-union. Early diagnosis and management lead to successful outcomes for these patients.

**Correct Answer:** A. Radius