Coronal STIR 3T image of metacarpophalangeal joint. Coronal STIR 3T image acquired through the long finger MCP. A long arrow demarcates the avulsed proximal aspect of the RCL from the MC head without a Stener lesion. The short arrow demarcates the low signal, taught, intact UCL. Note the MCP fluid, regional edema, and underlying cystic change in the MC head.STIR- short TI inversion recovery; MCP- metacarpophalangeal; RCL- radial collateral ligament; UCL- ulnar collateral ligament