Commonest fracture in childhood is
**Core Concept**
The commonest fracture in childhood is a type of injury that occurs due to a sudden, forceful displacement of bone fragments, typically affecting the growth plates and long bones in children. This is often associated with high-impact injuries, such as falls from a height or motor vehicle accidents.
**Why the Correct Answer is Right**
The correct answer is the **clavicle fracture**. The clavicle is a long bone located in the shoulder region, and its unique anatomy makes it susceptible to fractures. The growth plates in children are more vulnerable to injury, and the clavicle is one of the most common sites for these injuries. The mechanism of injury often involves a direct blow to the shoulder or an indirect force transmitted through the arm, leading to a fracture.
**Why Each Wrong Option is Incorrect**
**Option A:** **Scaphoid fracture** is a common fracture in adults, particularly in those involved in sports or activities that involve a fall onto an outstretched hand. While it can occur in children, it is not the most common fracture in this age group.
**Option B:** **Femur fracture** is a serious injury that can occur in children, but it is relatively rare compared to clavicle fractures. Femur fractures often require surgical intervention and have a higher risk of complications.
**Option C:** **Humerus fracture** can occur in children, especially in those involved in sports or activities that involve a fall onto an outstretched arm. However, it is not as common as clavicle fractures in this age group.
**Clinical Pearl / High-Yield Fact**
The clavicle is the most commonly fractured bone in children due to its unique anatomy and the mechanism of injury. Remember the mnemonic "CLAVICLE" to associate the correct answer: **C**hildhood, **L**ong bone, **A**nalgesic use is not necessary, **V**ulnerability to growth plate injury, **I**njury often occurs from a fall or direct blow, **C**areful examination and imaging are required for diagnosis, **L**ong-term outcomes are generally good.
**Correct Answer:** C. Clavicle fracture.