Magnetic resonance imaging of the hip: anatomy and pathology

Mak, May San; Teh, James

doi:10.5114/pjr.2020.99414

Cited by 6 publications

(5 citation statements)

References 67 publications

(45 reference statements)

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“…OA is the most common arthropathy, most often resulting from repetitive microtrauma to articular cartilage as a result of overuse and aging [10,66,97]. It is also thought that the subchondral trabecular bone can undergo changes prior to cartilage damage, with resulting BMO-like lesions that are associated with pain and eventual cartilage loss [98] (Figure 22).…”

Section: Osteoarthritis (Oa)mentioning

confidence: 99%

“…Synovitis is also often present in OA, due to low-grade inflammation caused by trauma and inflammatory factors [8]. OA can also occur secondary to inflammatory arthritis, acute trauma, and prior infection [97]. This disease commonly involves the acromioclavicular joint, the small joints of the hands and feet, the knee, the hip, the shoulder, and the spine.…”

Section: Osteoarthritis (Oa)mentioning

confidence: 99%

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Magnetic resonance imaging of rheumatological diseases

Weaver¹,

Omar²,

Mar³

et al. 2022

pjr

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Magnetic resonance imaging (MRI) is extremely useful in the early diagnosis of rheumatologic diseases, as well as in the monitoring of treatment response and disease progression to optimize long-term clinical outcomes. MRI is highly sensitive and specific in detecting the common findings in rheumatologic diseases, such as bone marrow oedema, cartilage disruption, articular erosions, joint effusions, bursal effusions, tendon sheath effusions, and synovitis. This imaging modality can demonstrate structural changes of cartilage and bone destruction years earlier than radiographs. Rheumatoid arthritis, crystal deposition diseases (including gouty arthropathy and calcium pyrophosphate deposition disease), seronegative spondyloarthropathies (including psoriatic arthritis, reactive arthritis, ankylosing spondylitis), and osteoarthritis have characteristic appearances on MRI. Contrast-enhanced MRI and diffusion-weighted imaging can provide additional evaluation of active synovitis. This article describes the MRI findings of normal joints, as well as the pathophysiological mechanisms and typical MRI findings of rheumatoid arthritis, gouty arthritis, calcium pyrophosphate deposition disease, psoriatic arthritis, reactive arthritis, ankylosing spondylitis, and osteoarthritis.

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Section: Osteoarthritis (Oa)mentioning

confidence: 99%

Section: Osteoarthritis (Oa)mentioning

confidence: 99%

Magnetic resonance imaging of rheumatological diseases

Weaver¹,

Omar²,

Mar³

et al. 2022

pjr

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“…A preliminary assessment of this relationship can be made with radiography. This prediction can be further explored with MRI [4,5]. Thus, the coverage of the femoral head by the acetabulum can be demonstrated in more details.…”

Section: Introductionmentioning

confidence: 97%

“…Although MRI is an expensive method and cannot be used frequently due to the need for sedation in pediatric patients to ensure immobility, it is an advantageous imaging method that can show hip joint compatibility in all aspects. In the literature, it is possible to discover studies reporting findings that can predict prognosis using MRI [4,[7][8][9][10]. However, there is still no defined and validated classification method for MRI.…”

Section: Introductionmentioning

confidence: 99%

Reliability of two common classifications for Legg-Calvé-Perthes disease if using MRI: Pediatric orthopedists vs. radiologists

Erkuş¹,

Kalenderer²,

Turgut³

et al. 2022

Med-Science

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In patients with Legg-Calvé-Perthes (LCP), the Catterall and Herring classifications based on standard hip radiographs are frequently used. In this study, the compatibility of classification systems in hip radiographs and MR images of LCP patients was examined among specialist working in the departments of Orthopedics and Radiology, and the reliability was investigated. In this study, which included 37 Perthes patients, two separate presentations were prepared in which the radiological imaging of the patients was determined by drawing lots. Six experienced specialists were selected as observers, three of whom were radiologist and three of pediatric orthopedists. Each presentations were sent to the observers one month apart. They were asked to categorize visual data. Data were evaluated with percent agreement (PA) and Gwet's AC1 method. In the Catterall classification, agreement among pediatric orthopedists decreased in MRI examination, while an increase was observed among radiologists. In the Herring classification, while pediatric orthopedists remained at a similar level, radiologists' inter-observer reliability increased. When the intra-observer reliability was examined, it was observed that the radiologists in the Catterall classification and the orthopedists in the Herring classification were more stable in the evaluations made with MRI. The usability of both classification systems, which provide prognostic prediction, in MRI examinations is a crucial unknown. It is fruitful that both radiologists and pediatric orthopedists work together in novel classification systems to be created using MRI.

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“…A fibrotic margin then develops around the necrotic bone 1 . On MIR, the characteristic “double line” sign is thereby appreciable 7 . T2-weighted imaging shows an inner area of high signal intensity corresponding to viable bone affected by granulomatous change.…”

mentioning

confidence: 99%

Vertebral Body Osteonecrosis Mimicking Malignant Disease on 18F-FDG PET

Chaudhary

Ngai²

2022

Clin Nucl Med

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We report a case of vertebral osteonecrosis after chemotherapy in a 24-year-old man with non-Hodgkin lymphoma, with transient avidity on 18F-FDG PET initially misinterpreted as recurrent extranodal disease. The patient demonstrated a partial metabolic response on midtreatment restaging PET; however, posttreatment PET showed an increase in uptake in T4 and T5 vertebrae, interpreted as recurrent vertebral disease. Repeat PET performed 9 days later showed resolution of thoracic vertebral uptake without interval treatment. On follow-up PET study, thoracic vertebrae demonstrated photopenia with sclerosis on CT, concerning for osteonecrosis. MRI features were concordant with this diagnosis.

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Magnetic resonance imaging of the hip: anatomy and pathology

Cited by 6 publications

References 67 publications

Magnetic resonance imaging of rheumatological diseases

Magnetic resonance imaging of rheumatological diseases

Reliability of two common classifications for Legg-Calvé-Perthes disease if using MRI: Pediatric orthopedists vs. radiologists

Vertebral Body Osteonecrosis Mimicking Malignant Disease on 18F-FDG PET

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