A 6-year-old child falls on an outstretched arm. An X-ray reveals that one side of the bone is broken while the other side is bent. Which type of fracture is most likely described?

1. A

   Complete fracture

2. B

   Greenstick fracture

3. C

   Buckle (torus) fracture

4. D

   Bowing fracture

Appeared in: NORCERT 8 Mains-2025

Explanation

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• A greenstick fracture is an incomplete fracture where the bone is bent, causing a break on the convex (tension) side of the bone, while the concave (compression) side remains intact but may be buckled.
• This pattern is characteristic in children because their bones are more pliable and have a thicker, stronger periosteum compared to adult bones.
• The name comes from the analogy of trying to break a young, green twig, which splinters on one side instead of snapping cleanly in two.
• The clinical description of a bone being broken on one side and bent on the other perfectly matches the definition of a greenstick fracture.

Why Other Options Were Wrong

• Option A: A complete fracture involves a break that extends through the entire thickness of the bone, resulting in two or more separate fragments. The question specifies that only one side of the bone is broken.
• Option C: A buckle or torus fracture is a compression injury where the bone cortex bulges outward. It does not involve a break on one side and a bend on the other.
• Option D: A bowing fracture, also called plastic deformation, involves the bone bending without any visible break or fracture line on the X-ray. The question explicitly states that one side of the bone is broken.

Related Visual

• Visual 1: Diagram: A comparative illustration showing the distinct appearances of greenstick, buckle (torus), bowing, and complete fractures in a long bone. This helps clarify the visual differences described.
• Visual 2: X-ray Image: An anteroposterior (AP) and lateral X-ray of a child's forearm demonstrating a classic greenstick fracture of the radius or ulna, highlighting the broken cortex on one side and the bent cortex on the other.

Clinical Relevance

• Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Identification of pediatric fracture types based on clinical and radiological description as background academic context rather than a clinical decision trigger.
• Recognizing different pediatric fracture patterns is essential for appropriate management. Greenstick fractures are unstable and require proper casting to prevent the fracture from completing or healing with an angulation deformity.
• A key nursing responsibility is performing frequent neurovascular checks (assessing color, temperature, sensation, movement, and pulses) distal to the injury to monitor for complications like compartment syndrome, a medical emergency.
• Patient and family education is critical. Nurses must teach cast care, signs of complications to watch for (e.g., increased pain, swelling, numbness), and the importance of follow-up appointments.

How to Approach the Question

• First, identify the key information in the question: the patient is a child (6 years old), the injury mechanism (fall on an outstretched arm), and the specific X-ray finding ('one side of the bone is broken while the other side is bent').
• The patient's age immediately signals that you should consider fracture types unique to children.
• Focus on the descriptive phrase: 'broken on one side, bent on the other'. This is the defining characteristic you need to match.
• Systematically review the definitions of the fracture types provided in the options.
• Compare the defining description from the stem to the definition of each option. A greenstick fracture is the only one that matches the 'break on one side, bend on the other' pattern.
• Eliminate the other options based on their definitions: a complete fracture breaks all the way through, a buckle fracture bulges, and a bowing fracture bends without breaking.

Concept Tested & Keywords

• Concept Tested: Identification of pediatric fracture types based on clinical and radiological description.
• Stem keywords: 6-year-old child, falls on an outstretched arm, X-ray, one side of the bone is broken, other side is bent
• Lead-in keywords: Which type of fracture
• Clinical cues: The patient's age (6 years old) is significant because it points towards pediatric fracture patterns.
• Clinical cues: The mechanism of injury (fall on an outstretched arm) is a classic cause for several types of wrist and forearm fractures.

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