**Core Concept**
Osteomyelitis is an infection of the bone, caused by bacteria such as Staphylococcus aureus. In the early stages of osteomyelitis, the bone may appear normal on X-ray, as the infection has not yet caused significant bone destruction or new bone formation.

**Why the Correct Answer is Right**
In the first 8-14 days of osteomyelitis, the X-ray may appear normal or show only subtle changes. This is because the infection is primarily in the soft tissues surrounding the bone, and the bone itself has not yet been significantly affected. As the infection progresses, the bone may become increasingly affected, leading to changes such as bone destruction, new bone formation, and periosteal reaction.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a common X-ray finding of osteomyelitis within 8 days. Osteomyelitis typically does not cause immediate bone destruction or new bone formation in the early stages.
**Option B:** This option is incorrect because it is a common finding of osteomyelitis, but typically occurs later in the disease process, after 2-3 weeks. Early in the disease, the X-ray may appear normal or show only subtle changes.
**Option C:** This option is incorrect because it is not a specific X-ray finding of osteomyelitis. While osteomyelitis can cause a variety of X-ray changes, option C is not a characteristic feature of the disease in the early stages.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the X-ray findings of osteomyelitis can be subtle in the early stages, and the diagnosis is often made based on a combination of clinical findings, laboratory tests, and imaging studies. The X-ray may appear normal or show only subtle changes, such as soft tissue swelling or a faint periosteal reaction.

**Correct Answer:** D.