Case presentation A 22-year-old man was on a skiing holiday when he accidentally landed on the ground with his hand braced on a ski pole. He complained of immediate pain and swelling at the base of his thumb following a valgus force being placed onto his abducted metacarpophalangeal joint. Examination He had some swelling at the base of his thumb. On palpation, he complained of tenderness over his thumb carpometacarpal joint, particularly over the ulnar border.
In addition, he showed a reduced range of movement in his thumb. Based on the X-ray image, what is your diagnosis for this patient? This Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only.
