What does an MRI look for in patients with ankylosing spondylitis?

The early clinical manifestations of ankylosing spondylitis are not typical, and it may be difficult to make a clear diagnosis by simple X-ray examination
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The early clinical manifestations of ankylosing spondylitis are not typical, and it may be difficult to make a clear diagnosis by simple X-ray examination
.

Magnetic resonance imaging (hereinafter referred to as MRI) is one of the important auxiliary diagnostic methods for ankylosis, especially for patients with ankylosis in the early stage of the disease
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Magnetic Resonance Imaging (hereinafter referred to as MRI) is one of the important auxiliary diagnosis methods for rigidity, Magnetic Resonance Imaging (hereinafter referred to as MRI) is one of the important auxiliary diagnosis methods for rigidity One of the methods,especially for the tonic patients in the early stage of the disease
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So what exactly does an MRI look at for ankylosing patients?

So what exactly does an MRI look at for ankylosing patients? So what exactly does an MRI look at for ankylosing patients? The role of MRI in patients with rigidity

MRI is a multiparameter, multiplanar imaging noninvasive examination
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MRI is a multi-parameter, multi-plane imaging non-invasive examination MRI is a multi-parameter, multi-plane imaging non-invasive examination MRI is a multi-parameter, multi-plane imaging non-invasive examination
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Clinically, understanding the nature of sacroiliac joint lesions through MRI is helpful to evaluate the inflammatory activity and prognosis of ankylosis, as well as the changes of local inflammation after medication
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Clinically, using MRI to understand the nature of sacroiliac joint lesions MRI to understand the nature of sacroiliac joint lesions MRI is helpful to evaluate the inflammatory activity and prognosis of ankylosis, as well as the changes of local inflammation after medication
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First, acute inflammatory lesions of the sacroiliac joint, such as bone marrow edema and synovitis, may develop chronic lesions such as fat deposition as the disease progresses, and fat deposition is an important predictor of joint space fusion
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First, acute inflammatory lesions of the sacroiliac joint, such as bone marrow edema and synovitis, may develop chronic lesions such as fat deposition as the disease progresses, and fat deposition is an important predictor of joint space fusion
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Secondly, the acute inflammatory changes of the sacroiliac joint can be restored to normal through effective treatment
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Secondly, the acute inflammatory changes of the sacroiliac joint can be restored to normal through effective treatment
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(Source: Photo Network)

(Source: Photo Network)

At present, there are several common MRI sequences for tonic , including T1 -weighted imaging (T1W1), T2-weighted imaging (T2W1), T2W1 fat reduction and T1W1 fat reduction enhanced imaging .

At present, there are several common MRI sequences for ankylosis , , , including T1-weighted imaging (T1W1), T2-weighted imaging (T2W1), T2W1 fat-suppression and T1W1 fat-suppression enhanced imaging T1-weighted imaging (T1W1), T2-weighted imaging (T2W1), T2W1 fat reduction and T1W1 fat reduction enhanced imaging T1 weighted imaging (T1W1), T2 weighted imaging (T2W1), T2W1 fat reduction and T1W1 fat reduction enhanced imaging , etc.

Ankylosis is most likely to involve the sacroiliac, spine and hip joints, so what do they show on MRI?

 

MRI manifestations of ankylosing spondylitis 0 1 1 sacroiliac joint sacroiliac joint

①The early stage of the lesion is articular cartilage edema , with low signal on T1WI and high signal on T2WI after fat reduction
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①The early stage of the disease is articular cartilage edema .

①The early stage of the disease is articular cartilage edema .

②In the case of joint effusion ②In the case of joint effusion ②In the case of joint effusion, itshows long T1 and long T2 signals

③The changes of the joint bone marrow can be expressed as ③The changes of the joint bone marrow can be expressed as ③The changes of the joint bone marrow can be expressed asthe thickening or disappearance of the linear cartilage signal, the irregular or twisted shape of the cartilage signal, the low signal on T1WI, and the fat reduction on T2WI.
Enhanced; when cartilage is eroded, the surface is irregular, with low signal on T1WI and irregular high signal on T2WI

④In the periarticular bone marrow ④In the periarticular bone marrow ④Fat accumulation may occur in the periarticular bone marrow.

⑤ The articular surface of the patients in the middle and late stages ⑤ The articular surface of the patients with the middle and late stagesFat reduction is low signal

⑥ Advanced sacroiliac joint disease ⑥ Advanced sacroiliac joint disease ⑥ Advanced sacroiliac joint diseasemay show varying degrees of bony ankylosis, narrowing or even disappearing of the joint space, and decreased T2W1 fat-suppressing signal of hyperplastic trabecular bone

The spine is the most prone to accumulation of stiffness except for the sacroiliac joints

As the disease progresses, ankylosis manifests as vertebral body inflammation and edema on spinal MRI, vertebral body inflammation and edema , vertebral body inflammation and edema , inflammatory exudation of spinal facet joints, narrowing of joint space, erosion of vertebrae, generalized osteoporosis, Intervertebral disc calcification, spinal rigidity, "bamboo vertebrae", and usually develops from the top to the bottom of the sacroiliac joint, from the initial sacroiliac joint upwards involving the lumbar, thoracic, cervical and even the entire spine
.
0 3 3 Hip Hip

30% to 50% of the ankylosis involves the hip joint , and in the early stage, it can be manifested as changes in articular cartilage, formation of subchondral cysts, hyperplasia of synovium and pannus, and edema of bone marrow
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30% to 50% of ankylosis lesions, 30% to 50% of ankylosis lesions, and 30% to 50% of ankylosis lesions involving the hip , involving the hip andinvolving the hip joint .
Early stage can be manifested as changes in articular cartilage, the formation of subchondral cysts, Hyperplasia of joint synovium and pannus, bone marrow edema,etc.

As the disease progresses, osteoporosis, destruction of the femoral head and acetabular bone and cystic degeneration, narrowing of the hip joint space, ossification of the round ligament, and pelvic osteitis may occur
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As the disease progresses, there may be osteoporosis, osteoporosis of the femoral head and acetabulum , osteoporosis of the femoral head and acetabulum , destruction and cystic degeneration of the femoral head and acetabulum, and hip joint space .
stenosis, ossification of the round ligament, pelvic osteitis
.
References: [1] Hao Qiaomei , Yu Liusen , Qin Fushuang , Hua Xiaoxia .
MRI manifestations of sacroiliitis in ankylosing spondylitis [J].
World Latest Medical Information Digest (Electronic Edition) , 2013: 106-106.
[2 ] Qin Haisong .
MRI study of sacroiliac joints in ankylosing spondylitis [J].
Massage and Rehabilitation Medicine (late issue), 2011: 16-17.
[3] Li Tianwang, perspective of ankylosing spondylitis and spondyloarthritisleave a message here