Internal impingement is a specific type of shoulder injury that is seen primarily in throwing athletes.
Source: Verywell Health
There are several reasons that a person might experience pain in their right shoulder and arm. In many cases, the pain will occur as a result of muscle overuse or injury. Pain can also result from damage to the nerves in that area.
Source: Medical News Today
Shoulder pain has several possible causes. If shoulder pain increases as you raise your arm, and the pain is worse than when it’s straight out at 90 degrees, your problem may be impingement.
The aim of this clinical laboratory study was to compare scapular and rotator cuff muscle activation between standard and modified exercises.
Source: Shoulder & Elbow