## **Core Concept**
A Colles' fracture is a type of fracture that occurs at the distal end of the radius bone in the forearm, typically resulting from a fall onto an outstretched hand. The fracture is characterized by specific displacements of the distal fragment.

## **Why the Correct Answer is Right**
In a Colles' fracture, the typical displacements seen are:
- Dorsal displacement: The distal fragment is displaced dorsally (towards the back of the wrist).
- Radial tilt: The distal fragment is tilted radially (towards the thumb side).
- Supination: The distal fragment is often in a supinated position.

However, volar (or palmar) displacement is not a characteristic feature of a Colles' fracture.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Dorsal displacement is a characteristic feature of Colles' fracture.
- **Option B:** Radial displacement or tilt is also commonly seen.
- **Option C:** Supination refers to the rotational displacement of the fracture.

## **Clinical Pearl / High-Yield Fact**
A key clinical correlation to remember is that Colles' fractures are often associated with a "dinner fork" deformity due to the dorsal displacement of the distal radius.

## **Correct Answer:** . Volar displacement