. American quarterly of roentgenology . No. 11 No. 12. Separation of the radial head atthe epiphysis with backward and upward dis-placement of the radial head. Note that theradial styloid is proximal to the cross linewhich may be interpreted as indicating thedisplacement of the radial head. No. 12 No. 13. Lateral view of No. 12, whichproves the interpretation of No. 12. Notethe abnormal position of the joint surface ofthe radial head.

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