MRI characteristics of enthesitis in peripheral ankylosing spondylitis

VernacularTitle:外周型强直性脊柱炎中附着点相关炎症的MRI表现
Author: Guo LI ; Jianjun LI ; Feng ZHAN ; Feng CHEN
Publication Type:Journal Article
Keywords: AS; Peripheral joint; Enthesitis; Magnetic resonance imaging
From: The Journal of Practical Medicine 2016;32(20):3383-3385
CountryChina
Language:Chinese
Abstract: Objective To explore the MRI findings of enthesitis in peripheral ankylosing spondylitis (AS). Methods We retrospectively reviewed the MRI obtained from 13 patients with clinically-diagnosed peripheral AS. MRI finding attributable to enthesitis could be visualized as tendon or ligament enthesitis, bone marrow edema (BME), synovitis, bursitis, tenosynovitis. Results MRI findings of knee showed enthesitis in 8 knees, mainly involved in the insertions of the quadriceps tendon at the upper patellar pole , the patellar ligament at the lower patellar pole and the tibial tubercle, BME in 8 knees, synovitis in 5 knees, bursitis in 3 knees, and tenosynovitis in 4 knees. MRI findings of ankle showed enthesitis in 3 ankles, involved in plantar insertion into calcaneus and Achilles tendon insertion into the calcaneus, BME in 1 ankle, and tenosynovitis in 3 ankles. Conclusion The lower extremities are more often involved in peripheral AS than the upper extremities. MRI characteristic of enthesitis may contribute to the diagnosis of peripheral AS early combined with HLA-B27.