**Core Concept**
The 'H' shaped vertebra is a radiological finding associated with certain pathological conditions. This shape is due to the collapse or destruction of the vertebral body, resulting in a characteristic 'H' shape on imaging.

**Why the Correct Answer is Right**
Although the correct answer choice is not provided, the 'H' shaped vertebra is typically seen in conditions that affect the vertebral body, such as osteoporosis or metastatic disease. The collapse of the vertebral body can lead to this characteristic shape, which is often visible on radiographs or other imaging modalities.

**Why Each Wrong Option is Incorrect**
**Option A:** Without the specific answer choices, it's challenging to provide detailed explanations for each option. However, in general, incorrect options might include conditions or vertebrae that do not typically exhibit this 'H' shape.
**Option B:** Similarly, without the specific options, it's difficult to provide a detailed explanation, but incorrect options would likely be those that do not correlate with the pathological conditions leading to an 'H' shaped vertebra.
**Option C:** and **Option D:** would follow similar reasoning, with incorrect options being those that do not align with the expected causes or appearances of an 'H' shaped vertebra.

**Clinical Pearl / High-Yield Fact**
The 'H' shaped vertebra is an important radiological finding, often associated with significant pathology. Recognizing this shape can prompt further investigation into underlying conditions such as osteoporosis or malignancy.

**Correct Answer:** D. Vertebra plana