v4.1 Fusion X
Most common carpal fracture, usually waist (70%). Blood supply retrograde to proximal pole → high risk of AVN. Clinical: anatomical snuffbox tenderness, pain on axial loading of thumb. Investigations: X-ray may be normal; MRI is sensitive for occult fracture. Treatment: cast for undisplaced, screw fixation for displaced, vascularized bone graft for nonunion.
What is the most common location for a scaphoid fracture?
What is the primary blood supply to the scaphoid?
Which clinical sign has the highest sensitivity for diagnosing a scaphoid fracture?
What is the initial treatment for an undisplaced scaphoid fracture?
What is the risk of avascular necrosis (AVN) associated with proximal pole scaphoid fractures?
Which imaging modality is most sensitive for detecting occult scaphoid fractures?
What is the management for a complete fracture through the waist of the scaphoid?
In the Herbert classification of scaphoid fractures, what is a type B2 fracture?
What is the appropriate intervention for a scaphoid non-union with cyst formation?
Which of the following statements about scaphoid fractures is true?