A 4 years old child suffered from a fall on outstretched hand. X rays revealed a fracture with the fracture line at the physes with a small metaphyseal fragment. There was no epiphyseal fracture. What type of injury by Salter harris Classification is this?

**Core Concept**
In pediatric orthopedics, Salter-Harris classification is a system used to categorize physeal fractures, which occur at the growth plate (physis). The classification is essential in determining the prognosis and management of such injuries.

**Why the Correct Answer is Right**
This type of injury, with the fracture line at the physes and a small metaphyseal fragment, is characteristic of a Salter-Harris I (SH I) fracture. In a SH I fracture, the fracture line extends through the growth plate (physis) but does not involve the epiphysis. The metaphyseal fragment, which is a small piece of bone, is often seen in this type of injury. The growth plate remains intact, and the epiphysis remains separate from the metaphysis.

**Why Each Wrong Option is Incorrect**
**Option A:** Salter-Harris II (SH II) fracture would involve a fracture through the growth plate and the epiphysis, which is not the case in this injury.

**Option B:** Salter-Harris III (SH III) fracture would involve a fracture through the growth plate and the metaphysis, but the epiphysis would remain separate, which is not the case in this injury.

**Option D:** Salter-Harris IV (SH IV) fracture would involve a fracture through the growth plate, the metaphysis, and the epiphysis, which is not the case in this injury.

**Clinical Pearl / High-Yield Fact**
To remember the Salter-Harris classification, use the mnemonic "PHIIC" where "P" stands for Physeal, "H" stands for Horizontal (growth plate), "I" stands for Intact (epiphysis), "I" stands for Involvement (metaphysis), and "C" stands for Complete (fracture line extends through growth plate).

**Correct Answer:** C.