Pain on the top of the shoulder usually originates from the Acromioclavicular joint of your shoulder
The AC joint, or acromioclavicular joint, is one of the joints that form your shoulder complex. The junction of the joint is formed by the collar bone on one side and the scapula on the other. The primary function of AC joint is to allow additional range of motion of the arm and assist movement of the shoulder. It also enables transmission of forces from upper arm to the rest of your body. 
Injuries to the AC joint are common. The can be presented as sprains or dislocations. Two of the most common ways people injure their AC shoulder joint are from falling on an outstretched arm or running directly into something. This can occur from motor vehicle accidents, contact sports and accidental trauma. 
Contact sports with high risk of collision – Football, Wrestling, Rugby, Biking and more.
Signs and symptoms of AC shoulder joint injury are: 
The main goal to treat AC joint pain is to manage pain and allow torn ligaments to heal.
Treatment for mild injuries include: 
At Lakeside Chiropractic, our experienced chiropractors are well prepared to deal with patient presenting with AC joint shoulder pain. We provide massage therapy, manual adjustment, cold laser therapy and more that may help reduce your pain and manage your condition. Lakeside chiropractic is located in Joondalup in Perth’s north and has visitors from many different suburbs including, Padbury, Kinross, Mindarie, Sorrento, Iluka, Carramar, Currambine, Tapping, Pearsall, Hocking and Woodvale. HICAPS Facilities available on site for major private health insurers (NIB, HCF, HBF, AHM, HCI and HIF) and also a part of the Medibank preferred practitioner and BUPA Members first network. If you would like to discuss any concerns, have any enquiries or wish to book an appointment; feel free to contact one of our friendly staff on 9300 0095 or visit our website.
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3. Frank RM, Cotter EJ, Leroux TS, Romeo AA. Acromioclavicular Joint Injuries: Evidence-based Treatment. Journal of the American Academy of Orthopaedic Surgeons. 2019 Sep;27(17):e775–88.