17th September 2020

A 30-year-old breakdancer presents with pain along the base of his thumb for the past 2 months

A 30-year-old breakdancer presents with pain along the base of his thumb for the past 2 months. On examination, it is tender on palpation with mild swelling. A plain radiograph demonstrates a small bone fragment at the ulnar side of the metacarpophalangeal joint of the thumb. 

Which of the following is the most likely diagnosis?

Select the SINGLE most appropriate option from the list below. Select ONE option only.