Prone shoulder abduction with external rotation at 100 degrees

The exercise shown is part of an exercise program for throwers. To perform the exercise, the patient begins the exercise laying face down with their throwing arm hanging straight towards the floor and thumb up (ie, extended like a hitchhiker). The patient raises their arm to the side in a plane slightly superior to the shoulder until the arm is parallel to the floor. This position is held for two seconds, and then slowly lowered back to the starting position. As strength increases, resistance is added.