An AC joint separation, or AC joint sprain, is an injury to the ligaments which hold the acromioclavicular joint together at the top of the shoulder. It is usually caused by a fall onto an outstretched arm with severe pain and swelling on top of the shoulder, especially when trying to move the arm overhead. …
Sudden onset shoulder pain
The Deltoid muscle is the large muscle on the top & outside of the shoulder. Although not a common injury, an injured Deltoid can result in pain at the front, side or back of the shoulder. A contusion is more common and occurs from direct impact or trauma to the muscle. On this page: Deltoid …
A posterior shoulder dislocation occurs when the head of the humerus moves backward out of the socket. This is a relatively rare injury as most shoulder dislocations are anterior. It may be caused by contact sports, car accidents or a fall. This shoulder injury results in a complete loss of function and severe pain, for which medical help is urgently needed.
The pectoralis major muscle is a large powerful muscle at the front of the chest. It is used to rotate the arm inwards. Its weak point is where the tendon attaches to the arm bone, and a strain or rupture can happen here when it is put under stress, when weight training for example. Symptoms of this shoulder injury include pain and swelling at the front of the shoulder.
The biceps muscle splits into two tendons at the shoulder. The long tendon runs over the top of the humerus bone and can suffer a partial rupture causing pain at the front of the shoulder. This shoulder injury is more common in older athletes and can cause pain down the arm and swelling in the joint.
A clavicle fracture, or broken collarbone as it is also known, is a fracture of the clavicle bone. The clavicle runs along the front of the shoulder to the breastbone or sternum in the middle of the chest, and can be fractured by a fall. The fracture normally happens towards the middle of the bone but can also happen near the shoulder. The pain will be intense and medical help is needed immediately.
A rotator cuff strain is a tear to any of the four rotator cuff muscles in the shoulder and is common in throwing and racket sports. They are so called because their job is to rotate the arm at the shoulder and provide a supportive cuff around the joint. This shoulder injury can range from mild to severe and may be caused by activity in sports involving throwing and/or degeneration due to overuse