Most common complication of scaphoid fracture is
**Core Concept**
Scaphoid fractures are a common type of wrist injury, particularly in young adults. The scaphoid bone plays a crucial role in wrist mobility and stability, and its fracture can lead to various complications due to its unique anatomy and blood supply.
**Why the Correct Answer is Right**
The most common complication of scaphoid fractures is nonunion, which occurs when the bone fails to heal properly. This is often due to the scaphoid's proximal pole having a relatively poor blood supply, which can impede healing and lead to a nonunion. Nonunion can result in chronic pain, wrist stiffness, and limited mobility.
**Why Each Wrong Option is Incorrect**
**Option A:** Avascular necrosis is a possible complication of scaphoid fractures, but it is not the most common one. Avascular necrosis refers to the death of bone tissue due to a lack of blood supply.
**Option B:** Malunion is a complication where the bone heals in an abnormal position, but it is not as common as nonunion in scaphoid fractures.
**Option C:** Infection is a possible complication of any fracture, but it is not the most common complication of scaphoid fractures.
**Option D:** Carpal tunnel syndrome is a condition that affects the median nerve, but it is not a direct complication of scaphoid fractures.
**Clinical Pearl / High-Yield Fact**
It's essential to diagnose and treat scaphoid fractures promptly to prevent complications. A thorough history, physical examination, and imaging studies (such as X-rays or CT scans) are crucial in evaluating scaphoid fractures.
**Correct Answer: B. Malunion is a complication where the bone heals in an abnormal position, but it is not as common as nonunion in scaphoid fractures.**