Shoulder AC Joint Exercise

https://www.drugs.com/cg/shoulder-separation-exercises.html
Swing injured arm as in image (and in circles too)20x each directionGradually increase how far you swing once you are used
Stand with arms at sides.Lift shoulders up to ears and hold for 1sPull shoulders back and pin shoulder blades together; hold for 1sRelax shouldersRepeat above for 20x
Lie on back and extend arms towards ceilingLift shoulders from ground without bending elbowsLower shoulders to ground without bending elbowsRepeat above 30x
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Stand upright Hold stick in both hands, palms down. Lift stick over head; keep arms straight. Hold for 5 seconds.Return to the starting position. 
Repeat above 10 times.
Stand upright and Hold stick in both hands behind back. Move the stick away from your back. Hold this position for 5 seconds. Relax and return to the starting position. Repeat above 10 times.
Lie on your back hold a stick in both hands, palms up. Your upper arms should be resting on the floor Your elbows at your sides and bent 90 degrees. Use your uninjured arm to push your injured arm out away from your body. Keep the elbow of your injured arm at your side while it is being pushed. Hold the stretch for 5 seconds. Repeat above 10 times.Stand with your uninjured arm behind your head holding the end of a stick. Put your injured arm behind your back at your waist and grab the stick.Pull the stick up behind your back bystraightening the elbow of your uninjured arm, andbending elbow of injured arm. Hold this position for 5 seconds and then go back to the starting position. Repeat above 10 times.
Stand and hold stick with both hands, palms facing away from your body. Rest stick against the front of thighs.Use your uninjured arm to push your injured arm out to the side and up as high as possible. Keep your arms straight.Hold for 5 seconds. Repeat above 10 times.Stand and hold a stick in both hands. Stretch your arms straight out in front of you at shoulder height. Keeping your arms straight, swing the stick to one side. Feel the stretch and hold for 5 seconds. Then swing the stick to the other side, feel the stretch, and hold for 5 seconds. Repeat above 10 times.
Stand with arms hanging down at sides. Keep arms straight & lift them in front of you and up over head as far as you can. Hold this position for 5 secondsThen bring your arms back down in front of you and to your sides. Do 2 sets of 15 reps.Stand with your arms at your sides.Bring your arms up, out to the side, and toward the ceiling. Hold for 5 seconds.Return to the starting position. Repeat above 10 times.
Stand with your arms held straight out in front of you at shoulder height. Pull your arms apart and out to the sides as far as possible. Hold arms back for 5 seconds, then bring them back together in front of you. Repeat above 10 times. Remember to keep your arms at shoulder height throughout the exercise.Stand with your arms at your sides. Move the arm on your injured side back, keeping the arm straight.Hold this position for 5 seconds. Return to the starting position. Repeat above 10 times.
Stand and shrug your shoulders up and hold for 5 seconds. Then squeeze your shoulder blades back and together and hold 5 seconds. Next, pull your shoulder blades downward as if putting them in your back pocket. Relax. Repeat sequence above 10 times.Lie on uninjured side with arm on your injured side relaxed across your chest. Slowly bring this arm up off the floor so that hand is pointing toward the ceiling. Keep your arm straight as you do this. Do 2 sets of 15 reps. Hold a weight in your hand as the exercise becomes easier.
Lie on stomach on a table or the edge of a bed with the arm on your injured side hanging down over the edge. Slowly lift your arm straight back and toward the ceiling. Do not bend your elbow. Return to the starting position. Do 2 sets of 15 reps . As this becomes easier, hold a weight in your hand.Stand with your arms at your sides, your palms resting against your sides. Lift the arm on your injured side out to the side and toward the ceiling. Keep your arm straight.Hold the position for 5 seconds and then bring your arm back to your side. Repeat above 10 times. Add a weight to your hand as the exercise gets easier.
Stand sideways next to a door with your injured arm closest to the door. Tie a knot in the end of the tubing and shut the knot in the door at waist level.Hold the other end of the tubing with the hand of your injured arm. Bend elbow of injured arm 90 degrees. Keeping elbow in at your side, rotate your forearm across your body and then slowly back to the starting position. Make sure you keep your forearm parallel to the floor. Do 2 sets of 8 to 12 reps.Stand sideways next to a door with your injured side closer to the door. Stand at shoulder’s length from door. Tie knot at end of the tubing and shut the knot in the door at shoulder height. Hold the tubing with the hand on your injured side at shoulder height. Slowly pull tubing down toward side. Do 2 sets of 15 reps.
Holding tubing connected to a door knob at waist level, face away from the door, keep your elbow straight and pull your arm forward. Do 2 sets of 15.Stand facing a door. Tie knot at end of the tubing and shut the knot in the door at shoulder height.Use the hand on your injured side to hold the tubing at shoulder height.Pull arm back, keeping arm straight. Do 2 sets of 15.
Stand sideways next to a door with your injured arm farther from the door. Tie a knot in the end of the tubing and shut the knot in the door at waist level. Hold the other end of the tubing with the hand of your injured arm. Rest the hand of your injured arm across your stomach. Keeping elbow at your side, rotate your arm outward and away from your waist. Slowly return arm to starting position. Make sure you keep elbow bent 90 degrees and forearm parallel to floor. Repeat 10 times. Build up to 2 sets of 15 reps.