TFCC injury (Palmer 1b)
Forced dorsiflexion of the wrist in a cycling accident.
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Contour defect and signal-rich haemorrhage in the ulnar portion of the TFCC. Effusion within the distal radio-ulnar joint. Normal bone signal.
A tear in the ulnar part of the TFCC caused by acute trauma is classified as Palmer1b.
Treatment is usually conservative.