1. FAI. (A) Radiograph shows a prominent bone bump (arrow) just distal to the lateral femoral physeal scar. (B) Alpha angle in FAI. Axial oblique T1-weighted fat-saturated arthrogram shows measurement of alpha angle. One line is drawn down the midportion of the femoral neck, the other line from center of the femoral head to the junction of the femoral bump. The alpha angle here is abnormal (angle greater than 55°). (C) Hip labral tear. Coronal T1-weighted fat-saturated arthrogram shows a labral tear (arrow) in a patient with impingement morphology. There is also joint space narrowing and articular cartilage damage.
Source: Hip MRI, Basic Musculoskeletal Imaging
Citation: Tehranzadeh J, MD. Basic Musculoskeletal Imaging; 2016 Available at: Accessed: October 02, 2017
Copyright © 2017 McGraw-Hill Education. All rights reserved