Patient with scaphoid fracture 7 months ago.
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Herbert screw internal fixation.
Clearly defined fracture of the scaphoid waist. Mild reduction of density of the proximal scaphoid bone with small cysts.
Fractures of the scaphoid waist represents 70% of the scaphoid fractures. Scaphoid mal-union is defined as a visible fracture remaining after 4 months with casting.
Scaphoid non-union is considered if the fracture line is identified after 7 months to a year.
In this particular case the scaphoid fracture line is still identified after 7 months with Herbert screw fixation. Early avascular necrosis of the proximal scaphoid is demonstrated as reduced bone density with multiple areas of cystic changes.