Description of ultrasonic imaging characteristics of enthesitis in ankylosing spondylitis
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Abstract
Objective: Research sonogram characteristic of entheses in ankylosing spondylitis (AS) patients and related factors.
Methods: A prospective, cross-sectional study with 87 AS patients in Cho Ray hospital from 10/2022 to 08/2023.
Results: Among 522 tendon attachment points in 87 patients with AS, 37.9% of entheses showed signs of inflammation when examined by software ultrasound. The proportion of tendon attachment points with inflammation on ultrasound but no clinical symptoms of inflammation are 29.9%. Hypoechoic images and increased tendon size are the most common lesions on ultrasound, accounting for 19.9% and 18.3%. No differences were noted in the average duration of illness, the rate of HLA-B27 antigen presence, the increase in CRP levels, the average BASDAI score, the average ASDAS-CRP score between the group of patients with enthesitis on ultrasound compared to the group without inflammation on ultrasound.
Conclustion: Ultrasound is a good tool to help detect and monitor enthesitis in patients with AS. No differences were noted in the average duration of illness, the rate of HLA-B27 antigen presence, the increase in CRP levels, the average BASDAI score, the average ASDAS-CRP score between the group of patients with enthesitis on ultrasound compared to the group without inflammation on ultrasound.
Keywords
ankylosing spondylitis, enthesitis, soft tissue ultrasound
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References
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