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출처: https://mskmri.tistory.com/1056 [MSK MRI:티스토리]
📌Adhesive Capsulitis
- Adhesive capsulitis (AC) is a condition characterized by synovial inflammation and capsular fibrosis, leading to fibroblastic infiltration, adhesion, and retraction of the capsule.
- It was traditionally associated with the glenohumeral (shoulder) joint, but recent evidence suggests it can affect other joints as well.
✅ Multi-Joint Involvement
- AC has been reported in joints such as the wrist, hip, and knee, indicating that it is not unique to the shoulder joint.
- Clinical Presentation: In the classic description of AC, pain presents first, followed by progressive loss of motion. The pain may subside, and motion may or may not be slowly restored.
✅ Imaging Findings:
- Imaging findings in affected joints include high signal intensity on fluid-sensitive images and contrast enhancement of the pericapsular tissues, such as around the anterior cruciate ligament (ACL), popliteal tendon insertion, and the posteromedial and lateral capsule in the knee.
- De Abreu et al. reported a case of knee pain with high T2 signal diffusely along the ACL, suprapatellar fat pad, and posteromedial capsule. Fluorodeoxyglucose positron emission tomography/computed tomography revealed extensive enhancement of the same structures, as well as the posterior cruciate ligament (PCL), popliteus insertion, posterior capsule, and semimembranosus (SM) insertion.
✅ Diagnosis Confirmation:
- The diagnosis of AC in this case was confirmed or strengthened by biopsy, with no other findings in the affected knee and a normal contralateral knee.
Magn Reson Imaging Clin N Am 22 (2014) 725–741
Semin Musculoskelet Radiol. 2016 Feb;20(1):12-25
"Visualizing MSK Radiology: A Practical Guide to Radiology Mastery"
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#AdhesiveCapsulitis, #CapsularFibrosis, #SynovialInflammation,#PericapsularTissues, #KneePain, #Fatpad,
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