A 28 year old man is investigated for recurrent lower back pain. A diagnosis of AS is suspected. Which of the following investigation is most useful?
belongs to book: 1700 MCQ REVISED VERSION TOPIC WISE|DR. KHALID SAIFULLAH|4th EDITION| Chapter number:9| Question number:16
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The key is B. XR sacro-iliac joints. [x-ray sacroiliac joint shows fusion of both SI joints and thin,
symmetrical syndesmophytes bridging the intervertebral disc spaces].
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