18th January 2024

A 35-year-old lady presents with a 3-month history of pain and stiffness in her wrists.

A 35-year-old lady presents with a 3-month history of pain and stiffness in her wrists. This is particularly bad first thing in the morning, although the pain is also an issue after a day at work. On examination, the wrists, the MCP and PIP joints are warm and swollen. Which of the following is the most specific investigation for confirming the likely diagnosis?

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