Most common area of pressure sore is
**Core Concept**
Pressure sores, also known as pressure ulcers or decubitus ulcers, are localized damage to the skin and/or underlying tissue that usually occur over a bony prominence as a result of pressure, or pressure in combination with shear and/or friction. The skin is subjected to prolonged pressure, leading to ischemia and subsequent tissue damage.
**Why the Correct Answer is Right**
The most common area for pressure sores is the sacrum, specifically the area over the sacral promontory. This is due to the high concentration of bony prominences in this region, which can lead to increased pressure on the skin and underlying tissues. The sacrum is a curved bone located at the base of the spine, and its shape can cause the skin to be subjected to prolonged pressure, especially in individuals who are immobile or have limited mobility.
**Why Each Wrong Option is Incorrect**
* **Option A:** The greater trochanter, while a common site for pressure sores, is not the most common area. This is because the pressure on the greater trochanter is typically less than that on the sacrum.
* **Option B:** The ischial tuberosity is another common site for pressure sores, particularly in individuals who spend extended periods in a seated position. However, it is not the most common area.
* **Option C:** The heels are also a common site for pressure sores, especially in individuals who are bedridden or have limited mobility. However, the sacrum remains the most common area.
**Clinical Pearl / High-Yield Fact**
The Braden scale is a widely used assessment tool for predicting the risk of pressure sores. It evaluates six factors: moisture, activity, mobility, nutrition, friction, and shear. A higher score indicates a lower risk of pressure sores.
**Correct Answer: C. Heels**