**Core Concept**
The question is testing the understanding of a systemic bone disorder characterized by thinning and weakening of the bones, making them prone to fractures. This condition is often associated with an imbalance in calcium and phosphate levels.

**Why the Correct Answer is Right**
The correct answer is related to a condition where there is an abnormal calcium-phosphate metabolism, leading to a decrease in bone density. This results in the characteristic periosteal resorption seen in the X-ray. The condition is often associated with an increase in parathyroid hormone (PTH) levels, which affects the calcium-phosphate balance.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not directly relate to a systemic bone disorder.
**Option B:** This option is incorrect as it does not describe a condition characterized by periosteal resorption.
**Option C:** This option is incorrect as it is not directly related to the systemic bone disorder described.

**Clinical Pearl / High-Yield Fact**
This condition can be associated with a variety of symptoms, including bone pain, fatigue, and muscle weakness. It is essential to consider this condition in patients with repeated fractures or bone pain, especially if they have a history of kidney disease or have been taking certain medications.

**Correct Answer:** D. Hyperparathyroidism. Hyperparathyroidism is a condition characterized by an overproduction of parathyroid hormone, which can lead to an imbalance in calcium-phosphate metabolism, resulting in periosteal resorption and increased risk of fractures.