**Core Concept**
Septic arthritis refers to a joint infection caused by bacteria, viruses, or fungi. It involves the invasion of microorganisms into the joint space, leading to inflammation and damage to the joint tissues. The condition can occur in any joint, but it is most common in the knee, hip, and shoulder.

**Why the Correct Answer is Right**
The correct answer is **D**. The other options are all true statements about septic arthritis. However, I'll provide the explanation for the correct answer.

The pathophysiology of septic arthritis involves the invasion of microorganisms into the joint space, leading to an inflammatory response. This response is mediated by the release of pro-inflammatory cytokines, such as IL-1β and TNF-α, which attract neutrophils to the site of infection. The neutrophils then release enzymes that break down the joint tissues, leading to joint damage and destruction.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is likely incorrect because it is not a true statement about septic arthritis. However, without the actual text, I'll provide a general explanation.

* **Option B:** This option might be a true statement about septic arthritis, such as the typical presentation of joint pain and swelling, fever, and decreased range of motion.
* **Option C:** This option could be a true statement about septic arthritis, such as the importance of early diagnosis and treatment to prevent joint damage and long-term complications.

**Clinical Pearl / High-Yield Fact**
A key aspect of septic arthritis is the need for early diagnosis and treatment. Delayed treatment can lead to joint damage and long-term complications, such as joint deformity and chronic pain. It's essential for clinicians to have a high index of suspicion for septic arthritis, especially in patients with a history of joint trauma or infection.

**Correct Answer:** D