Dinner fork deformity is seen in:

Haryana CHO -2023

Medical Surgical Nursing

Easy

Appeared in: Haryana CHO -2023

Explanation

The 'dinner fork' deformity is a classic clinical sign specifically associated with a Colles' fracture.
A Colles' fracture is a break in the distal (far end) of the radius bone in the forearm.
The deformity is caused by the dorsal (backward) displacement of the distal bone fragment.
This displacement creates a visible bump on the back of the wrist, resembling the curve of a dinner fork when viewed from the side.

Option A: A fracture of the ulna, the other bone in the forearm, does not cause the characteristic dinner fork deformity. Deformity in an ulnar fracture depends on the location and displacement but is distinct from a Colles' fracture.
Option C: An epicondylar fracture is an injury to the elbow, specifically the distal end of the humerus. It presents with elbow pain and swelling, not a wrist deformity.
Option D: Volkmann's ischemic contracture is a severe complication, not a primary sign of a fracture. It is a permanent flexion contracture of the hand and wrist, resulting in a claw-like deformity due to muscle and nerve damage from ischemia (lack of blood flow), often following a supracondylar fracture of the humerus.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of clinical signs associated with specific types of fractures as background academic context rather than a clinical decision trigger.
Prompt recognition of a dinner fork deformity is crucial for a nurse as it strongly indicates a Colles' fracture, requiring immediate immobilization and medical evaluation.
A key nursing intervention for a suspected Colles' fracture is to perform a thorough neurovascular assessment of the affected limb (checking pulse, capillary refill, sensation, and movement) both before and after splinting to detect any compromise.
What if? If the deformity showed a volar (palmar) displacement instead of dorsal, it would be a 'garden spade deformity,' indicating a Smith's fracture, which often requires different reduction and management techniques.

How to Approach the Question

First, identify the key term in the question stem, which is 'Dinner fork deformity'.
This is a classic, named clinical sign. The question is a test of factual recall, linking the sign to its corresponding medical condition.
Mentally review the common types of upper limb fractures and their characteristic deformities.
Evaluate each option: A fracture of the ulna, an epicondylar (elbow) fracture, and Volkmann's contracture (a complication) do not match the description of a dinner fork deformity at the wrist.
Select the option that correctly associates the dinner fork deformity with the fracture of the distal radius, which is a Colles' fracture.

Concept Tested & Keywords

Concept Tested: Identification of clinical signs associated with specific types of fractures.
Stem keywords: Dinner fork deformity
Lead-in keywords: is seen in
Negative lead-in flag: false

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