What is deltoid tendonitis?

Deltoid tendonitis is an inflammation of the tendons that connect the deltoid muscle to the shoulder joint. The deltoid muscle is located at the front, side, and back of the shoulder and is responsible for abducting (lifting away from the body), flexing (bending forward), and extending the shoulder.

Deltoid tendonitis is typically caused by overuse of the shoulder, such as from repetitive overhead activities like throwing a baseball or painting a ceiling. It can also occur due to trauma, such as falling on the shoulder or being hit in the shoulder.

Symptoms of deltoid tendonitis include:

- Pain in the shoulder, especially when the shoulder is moved

- Swelling and tenderness over the deltoid muscle

- Weakness in the shoulder

- Limited range of motion of the shoulder

Treatment for deltoid tendonitis typically involves rest, ice, compression, and elevation (RICE). Over-the-counter pain relievers may also be recommended to help relieve pain and inflammation. Physical therapy may be recommended to help strengthen the shoulder and improve range of motion. In severe cases, surgery may be necessary to repair the damaged tendons.

Deltoid tendonitis can be a painful and debilitating condition, but it can typically be treated successfully with conservative measures such as rest, ice, compression, and elevation.