## **Core Concept**
A straddle fracture refers to a type of fracture that occurs in the **pelvis**, specifically involving both pubic rami. This type of fracture is often seen in high-energy trauma, such as that experienced in road traffic accidents or falls from a height.

## **Why the Correct Answer is Right**
The correct answer, which involves both pubic rami, is right because a straddle fracture by definition involves fractures of both the **superior and inferior pubic rami** or both sides of the pubic bone. This fracture pattern can lead to significant pelvic instability and potential complications such as **hemorrhage**, **urinary tract injuries**, and **pain**. The mechanism often involves a direct blow to the pelvis or a fall astride an object.

## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not accurately describe the anatomy involved in a straddle fracture.
- **Option B:** This option is incorrect because, similar to option A, it does not correctly represent the bilateral nature of a straddle fracture involving the pubic rami.
- **Option C:** This option might seem plausible but does not accurately describe a straddle fracture, which specifically involves the pubic rami.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that straddle fractures can be associated with **increased risk of urinary tract injuries**, such as urethral damage. Clinicians should have a high index of suspicion for these injuries in patients with pelvic fractures.

## **Correct Answer: D.**