Longitudinal sonogram of the Achilles tendon in a patient with enthesitis due to ankylosing spondylitis
Longitudinal sonogram of the Achilles tendon in a patient with enthesitis due to ankylosing spondylitis
This longitudinal sonogram of the Achilles tendon (T) in a patient with ankylosing spondylitis shows a swollen tendon enthesis with decreased echogenicity and a large bony erosion (arrows) in the calcaneus (C).
