## **Core Concept**
Housemaid's knee, also known as prepatellar bursitis, is a condition characterized by inflammation of the prepatellar bursa. This bursa is located in front of the kneecap (patella) and helps reduce friction between the kneecap and the underlying bone and soft tissues. The condition often affects individuals who frequently kneel, such as housemaids, hence the name.

## **Why the Correct Answer is Right**
The correct answer, , corresponds to the prepatellar bursa. This bursa can become inflamed due to prolonged kneeling, leading to swelling, pain, and warmth in the front of the knee. The mechanism involves repeated trauma or pressure on the knee, causing fluid accumulation and inflammation in the bursa.

## **Why Each Wrong Option is Incorrect**
* **Option A:** - This option does not correspond to a bursa commonly associated with housemaid's knee.
* **Option B:** - This option refers to another bursa or anatomical structure not primarily associated with housemaid's knee.
* **Option D:** - This option also does not correspond to the bursa primarily affected in housemaid's knee.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that housemaid's knee is an example of an occupational hazard, specifically related to activities causing repetitive trauma to the knee. It is essential to consider the patient's history and activities when diagnosing knee conditions.

## **Correct Answer:** . Prepatellar bursa.