Abnormal shoulder morphology Squared off shoulders 2024-03-07T12:06:04Z An appearance of the shoulders whereby the neck-trapezius angle (angle between the neck and the shoulder) and the angle formed by the shoulder and the arms hanging at the side of the body are both close to 90 degrees. This gives the should the appearance of the corner of a square. See Figure 1 of PMID:33258289.