I scanned this teenager who hyperextended his thumb during footy. Very tender dorsal aspect of MCPJ. When I was flexing his thumb, it looked like the joint was slightly widened compared to the right side. Also thought there was echogenic fluid within the joint, would this be blood? I was thinking back to your lectures where blood often means fracture? Could you get blood in the joint without having a fracture?
I thought the collateral ligaments were NAD. Pt stated XR done a week prior elsewhere NAD.