Answer:
HAGL lesion with Biceps Tendon Subluxation and Hill Sach Defect
Findings:
Avulsion of the humeral attachment of inferior glenohumeral ligament (HAGL lesion) with adjoining soft tissue edema. Associated biceps tendon subluxation, Hill Sach defect and subscapularis tendon strain. Moderate degree (6.3mm) bursal surface and interstitial tear of supraspinatus tendon.
Discussion:
The HAGL lesion is an important cause of anterior instability at the glenohumeral joint. The IGL has a sling-like geometry consisting of an anterior band, a posterior band, and the axillary recess of the capsule between these bands . On the coronal oblique plane, the axillary pouch is normally U-shaped when distended with fluid. Conversion of this U-shaped pouch to a J-shape (J sign) are the typical imaging findings seen in conventional fat-suppressed T2-weighted images
Ref: Update on the Shoulder, An Issue of Magnetic Resonance Imaging Clinics Vol20 May 2012
Contributed By:
Dr. Babu Peter MD, DNB
Associate Professor, Barnard Institute of Radiology, Chennai
Senior Consultant Radiologist, Aarthi Scans, Chennai
HAGL lesion with Biceps Tendon Subluxation and Hill Sach Defect
Findings:
Avulsion of the humeral attachment of inferior glenohumeral ligament (HAGL lesion) with adjoining soft tissue edema. Associated biceps tendon subluxation, Hill Sach defect and subscapularis tendon strain. Moderate degree (6.3mm) bursal surface and interstitial tear of supraspinatus tendon.
Discussion:
The HAGL lesion is an important cause of anterior instability at the glenohumeral joint. The IGL has a sling-like geometry consisting of an anterior band, a posterior band, and the axillary recess of the capsule between these bands . On the coronal oblique plane, the axillary pouch is normally U-shaped when distended with fluid. Conversion of this U-shaped pouch to a J-shape (J sign) are the typical imaging findings seen in conventional fat-suppressed T2-weighted images
Ref: Update on the Shoulder, An Issue of Magnetic Resonance Imaging Clinics Vol20 May 2012
Contributed By:
Dr. Babu Peter MD, DNB
Associate Professor, Barnard Institute of Radiology, Chennai
Senior Consultant Radiologist, Aarthi Scans, Chennai