Figure 13.

Prone: Making I, T, Y letters. Exercise starts with the individual lying in prone with arm hanging off the edge of the treatment table (A). Position the scapula in retraction and depression. The therapist can provide feedback with hands. Maintain this position while extending the arm posteriorly in line with the trunk (letter “I”, B), horizontally abducting the arm (letter “T”, C) or elevating the arm to about 120° (letter “Y”, D). Avoid activity of the upper trapezius. The black arrows indicate the importance of maintaining relative scapular retraction and depression during the exercise.