Ultrasound (US) image over the posterior scapula in the sagittal plane.
Trap: trapezius; SS: supraspinatus muscle; Spine: scapular spine; IS: infraspinatus muscle; TMin: teres minor muscle; Arrow: osseous ridge separating the infraspinatus and teres minor muscles. Left: cephalad; Right: caudad; Bottom of screen: deep; Top of screen: superficial.
Courtesy of Jonathan Finnoff, DO. Used with permission of Mayo Foundation for Medical Education and Research. All rights reserved.
