Acromioclavicular Joint Arthritis
What are the symptoms of AC arthritis?
AC Joint arthritis usually causes pain around the top of the shoulder, but can also seem to affect the neck, chest and inside the shoulder joint itself. This pain tends to be brought on by certain movements, and may get worse during the day as the shoulder is used.
Other symptoms include a clicking sensation when the shoulder is used, and swelling and tenderness over the bone.
A good test to perform on yourself is called the Cross Chest Compression Test. Cross the affected arm across your chest, putting your hand on the other shoulder. If this elicits your pain, it is likely you have AC arthritis, however it's important to get a physiotherapist or doctor's opinion.