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Why does scaphoid fracture cause avascular necrosis?

Why does scaphoid fracture cause avascular necrosis?

Avascular necrosis: This is a complication in which cells of the scaphoid bone die due to lack of blood supply, causing bone collapse and arthritis. This usually happens in case of displaced fractures, as the displaced bone fails to get proper nutrients.

What is the most common complication of scaphoid fracture?

Avascular necrosis is common complication of a scaphoid fracture (in around 30% of cases), with its risk increasing the more proximal the fracture. Non-union is the bone failing to heal properly, most commonly due to a poor blood supply.

Is the scaphoid a can’t miss fracture?

The scaphoid is the most commonly fractured carpal bone. Always consider this injury in a patient with a fall on an outstretched hand Scaphoid fractures are a “can’t miss” ED diagnosis due to the high morbidity associated with their complications.

What to do with a scaphoid non union fracture?

If the fracture is in a certain part of the bone or if the fracture is at all displaced (bone ends have shifted), surgery might be the best option. This might include the insertion of a screw or pins (Figure 3). A scaphoid non-union fracture refers to a wrist fracture that is failing to heal.

What are the symptoms of a scaphoid fracture of the wrist?

Scaphoid Fracture of the Wrist A scaphoid (navicular) fracture is a break in one of the small bones of the wrist. This type of fracture occurs most often after a fall onto an outstretched hand. Symptoms of a scaphoid fracture typically include pain and tenderness in the area just below the base of the thumb.

Is there a Percutaneous screw fixation for a scaphoid fracture?

(OBQ08.111) Percutaneous screw fixation for non-displaced scaphoid waist fractures has been shown to have which of the following differences compared to closed treatment? (OBQ06.16) A 27-year-old professional cowboy is thrown from a bull during the rodeo and lands on his hand.