There are a number of reasons why you might be experiencing shoulder pain, which include:
- poor posture
- frozen shoulder – a painful condition that reduces normal movement in the joint and can sometimes prevent movement in the shoulder altogether
- rotator cuff disorders – the rotator cuff is a group of muscles and tendons that surround the shoulder joint and help to keep it stable
- shoulder instability – where the shoulder is unstable and may have an unusually large range of movement (hypermobility)
- acromioclavicular joint disorders – conditions, including osteoarthritis that affect the acromioclavicular joint, which is the joint at the top of the shoulder
- osteoarthritis in the shoulder joints
- a broken (fractured) bone, such as a fracture of the humerus (upper arm bone) or broken collarbone
In some cases, pain in the shoulder isn’t caused by a problem in the shoulder joint, but by a problem in another area, such as the neck, that is felt in the shoulder and upper back.
A number of factors and conditions can contribute to shoulder pain. The most prevalent cause is rotator cuff tendinitis. This is a condition characterized by inflamed tendons. Another common cause of shoulder pain is an impingement syndrome where the rotator cuff gets caught between the acromium (part of the scapula that covers the ball) and humeral head (the ball portion of the humerus).
Sometimes shoulder pain is the result of injury to another location in your body, usually the neck or bicep. This is known as referred pain. Referred pain generally doesn’t get worse when you move your shoulder.
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