- Radiograph ( no copyright, not uploaded ) - Avulsion fracture of ulnar collateral ligament of thumb.
There is an avulsion fracture from proximal phalanx base at site of ulnar collateral ligament attachment. Ligament is odematous - hypoechoic. However, ligament and bony flake are deep to appneuosis. There is no pseudomass formation abutting metacarpal head.