**Core Concept**
Salter Harris physeal injuries are a classification system for fractures that involve the growth plate in children. The metaphysis is the region of the bone that is distal to the growth plate, and the physis is the growth plate itself. These injuries can be further classified based on the extent of involvement of the growth plate.

**Why the Correct Answer is Right**
A Salter Harris type II fracture is a metaphyseal fracture that involves the growth plate, but does not cross it. This type of fracture occurs when a force is applied to the metaphysis, causing a fracture that extends into the growth plate, but does not completely disrupt it. The growth plate remains intact, but the surrounding metaphysis is fractured.

**Why Each Wrong Option is Incorrect**
* **Option A:** Salter Harris type I fractures involve a separation of the growth plate from the metaphysis, which is not the case in this scenario.
* **Option B:** Salter Harris type III fractures involve a fracture that crosses the growth plate, which is not the case in this scenario.
* **Option C:** Salter Harris type IV fractures involve a fracture of the epiphysis and the growth plate, which is not the case in this scenario.

**Clinical Pearl / High-Yield Fact**
Salter Harris physeal injuries can lead to growth disturbances, such as limb length discrepancy or angular deformity, and should be treated promptly to minimize the risk of these complications.

**Correct Answer:** A. Salter Harris type II fracture.