1. AC Joint Injury By Eric Hunter

2. Causes of AC Joint Injury Athletes that suffer AC Joint Injuries – Football players, Soccer players, mountain biking, wrestlers, etc… Mechanism of injury – Falling on the tip of the shoulder – FOOSH

3. AC Joint Injury Signs and Symptoms Pain Point tenderness Arm hanging to side Deformity Laxity

4. AC Joint Anatomy

5. AC Joint Injury

6. AC Joint Evaluation Sulcus Sgin – Patient sits with arm hanging to the side. – Apply an inferior force to arm and look for separation of the acromion from the clavicle.

7. AC Joint Evaluation Cont. Piano Key Sign – Apply downward pressure to the distal clavicle looking for depression when the pressure is applied and then elevation when the pressure is released. Horizontal ADD – Have the patient actively flex the shoulder then bring the arm across the body.

8. Rehabilitation of AC Joint Injury Non-surgical – Grades 1 and 2 – Period of immobilization – Proceed with rehabilitation activities as tolerated ROM first until pain free then strengthening exercises Surgical – Grade 3 – Major deformity – Longer time until rehabilitation activities are started

9. Citation Starkey, C., Brown, S. D., & Ryan, J. L. (2009). Examination of orthopedic and athletic injuries. (3 ed.) F A Davis Co. "Shoulder Separation." American Academy of Orthopedic Surgeons. AAOS, Oct 2007. Web. 18 Nov 2012..