6 天之前 · MRI. The clue to identifying an ALPSA lesion is the medial displacement and inferior shifting of the inferior glenohumeral ligament (IGHL) complex. A Hill-Sachs defect may be seen in association. MR arthrography. May show contrast material entering a cleft between the anteroinferior glenoid and the labrum.

2012年5月21日 · ALPSA. An ALPSA-lesion is an Anterior Labral Periosteal Sleeve Avulsion. The anterior labrum is absent on the glenoid rim. The arrow points to the medially displaced labroligamentous complex.

On T1-weighted MRI images, an Anterior Labral Periosteal Sleeve Avulsion (ALPSA) lesion may appear as a discontinuity or irregularity in the normal contour of the anterior labrum. The lesion itself may exhibit an intermediate to low signal intensity compared to the surrounding structures.

An ALPSA lesion is an anterior labroligamentous periosteal sleeve avulsion. ALPSA is a variation of the Bankart lesion where the anterior inferior labrum is torn and the labrum, inferior glenohumeral ligament and intact scapular periosteum are stripped and displaced medially on …

ALPSA lesions were seen in 12.5% patients with acute anterior instability, increasing to 31% of the population with chronic instability . Figure 8: Anterior labral periosteal sleeve avulsion (ALPSA). Axial T1-weighted fat-saturated MR arthrographic image shows a classic ALPSA lesion.

Features reflecting sequelae of recurrent right shoulder dislocation; anterior labroligamentous periosteal sleeve avulsion lesion (ALPSA); a variant of Bankart lesion, Hill Sach's bony humeral defect and moderate shoulder joint effusion.

Imaging use before anterior and posterior shoulder stabilization surgery included plain radiographs (69%, 70%, respectively), magnetic resonance imaging (MRI; 43%, 33%), and computed tomography...

2025年3月28日 · * Definition and pathophysiology of the ALPSA lesion and how it occurs. * Description of the ALPSA lesion at arthroscopy and the role of MRI in guiding the arthroscopist. * Review of imaging findings with both routine MRI and MR arthrography. * Representative cases that demonstrate ALPSA lesions on both routine and arthrographic MR.

Anterior labrum periosteal sleeve avulsion (ALPSA) is the avulsion of the labrum and of the non-disrupted periosteum with the subsequent healing of the labrum in a medialized nonfunctional position on the glenoid neck.

2025年2月8日 · MRI. The clue to identifying an ALPSA lesion is the medial displacement and inferior shifting of the inferior glenohumeral ligament (IGHL) complex. A Hill-Sachs defect may be seen in association. MR arthrography. May show contrast material entering a cleft between the anteroinferior glenoid and the labrum.