PLAB-0615
A 25-year-old male presented in the OPD with the complaint of recurrent lower back pain. The doctor suspected a diagnosis of ankylosing spondylitis. Which one of the following investigations is the most useful to confirm this diagnosis?
A 25-year-old male presented in the OPD with the complaint of recurrent lower back pain. The doctor suspected a diagnosis of ankylosing spondylitis. Which one of the following investigations is the most useful to confirm this diagnosis?