Avascular necrosis can be a possible sequelae of fracture of all of the following bones, except –
**Core Concept**
Avascular necrosis (AVN) occurs when a bone loses its blood supply, leading to tissue death and potential collapse of the bone structure. This condition can arise from various factors, including fractures that disrupt the blood supply to the bone.
**Why the Correct Answer is Right**
Avascular necrosis is a known complication of fractures to the femoral head, femoral neck, and talus. The femoral head is particularly susceptible due to its limited blood supply, which can be compromised by fractures or dislocations. The talus, being a weight-bearing bone with a tenuous blood supply, is also prone to AVN after fractures. In contrast, the bones of the forearm, such as the radius and ulna, have a more robust blood supply and are less likely to develop AVN after fractures.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, but typically, the bones of the forearm (radius and ulna) are often cited as being at lower risk for AVN.
**Option B:** This option is not provided.
**Option C:** This option is not provided.
**Clinical Pearl / High-Yield Fact**
When assessing a patient with a femoral neck fracture, it is essential to consider the risk of avascular necrosis, particularly in the first 6-12 months after the injury. Early imaging studies, such as MRI, may be necessary to monitor for signs of AVN and guide treatment.
**Correct Answer:** D.