case_images: PMC4983335_01
case_images: PMC4983335_02
case_images: PMC4983335_03
case_images: Radiograph demonstrating dislocated metacarpal-phalangeal joint of the first digit.
case_images: CRIEM2016-2518596.001.jpg
case_images: PMC4983335_03_CRIEM2016-2518596.001.jpg
case_images: fig1
case_images: The patient's hand radiograph showed dorsal dislocation of the left thumb at the MCP joint without evidence of fracture (Figure 1).
case_images: PMC4983335_04
case_images: Ultrasound image demonstrating needle and anesthetic solution around the ulnar nerve.
case_images: CRIEM2016-2518596.002.jpg
case_images: PMC4983335_04_CRIEM2016-2518596.002.jpg
case_images: fig2
case_images: The patient underwent an in-plane left ulnar nerve block under ultrasound guidance (Figure 2).