Introduction The term “frozen shoulder” is used synonymously with adhesive capsulitis .
The term “frozen shoulder” is used synonymously with adhesive capsulitis . Women in their 50s-70s are most commonly diagnosed with adhesive capsulitis. The pathophysiology of an adhesive capsulitis is inflammation of the synovial surface of the GH joint.
There is also fibroblast proliferation in both the axillary recess and rotator cuff interval. Histologic samples have shown thickening of the capsule and synovium. Patients with a frozen shoulder typically complain of shoulder pain and a decrease in their shoulder range of motion.
Clinical exam can be difficult because patients can have concurrent calcific tendonitis, subacromial bursitis, and GH arthritis. As a result, MRI has been used to help aid in diagnosis. Imaging Findings The relevant anatomy when evaluating an MRI for adhesive capsulitis is the rotator interval, the coracohumeral ligament, and the axillary pouch.
Patients typically have painful inflammatory capsules of the joint capsule secondary to inflammation in the glenohumeral ligaments. The rotator interval is a triangular space that is bordered by the supraspinatus tendon, subscapularis tendon, coracoid process and long head of the biceps tendon. The coracohumeral ligament aids in restraining external rotation.
Image of the rotator interval Thickness of the rotator interval >3mm and coracohumeral ligament > 4mm are the thresholds used for diagnosis. On MRI, the rotator cuff interval appears hypointense in a patient with adhesive capsulitis. Hypointensity of the rotator cuff interval in a patient with adhesive capsulitis Providers also need to look for capsular and synovial thickening.
If you are experiencing symptoms that may be related to adhesive capsulitis of the shoulder mri findings, it is important to see a sports medicine physician. Early evaluation and treatment typically lead to better outcomes. Do not ignore pain or symptoms that are limiting your activity.
*This article is for educational purposes only and does not substitute for professional medical advice. Always consult a qualified healthcare provider.*
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