A vascular necrosis can be a possible sequelae of fracture of all of the following bones, EXCEPT:
**Core Concept**
Vascular necrosis, also known as avascular necrosis (AVN), is a condition where the blood supply to a bone is interrupted, leading to tissue death. This can occur due to various reasons, including fractures, dislocations, and other traumatic injuries.
**Why the Correct Answer is Right**
The correct answer is **D**. The bones most commonly associated with an increased risk of avascular necrosis after a fracture are the femoral head, humeral head, and talus. This is because these bones have a limited blood supply, making them more susceptible to ischemic injury. The femoral head, in particular, is a common site for AVN due to its blood supply being vulnerable to disruption during fractures.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the femoral head is indeed a common site for avascular necrosis after a fracture. The femoral head's blood supply is vulnerable to disruption during fractures, making it a high-risk area for AVN.
**Option B:** This option is incorrect because the humeral head is also a common site for avascular necrosis after a fracture. The humeral head's blood supply is limited, and fractures in this area can easily disrupt the blood vessels, leading to AVN.
**Option C:** This option is incorrect because the talus is a common site for avascular necrosis after a fracture. The talus has a limited blood supply, and fractures in this area can easily disrupt the blood vessels, leading to AVN.
**Clinical Pearl / High-Yield Fact**
Avascular necrosis can be a complication of fractures in bones with limited blood supply, such as the femoral head, humeral head, and talus. It's essential to recognize the increased risk of AVN in these areas to provide prompt and effective treatment.
**Correct Answer: D.**