<unk>  is the inflammation of the fluid-filled sheath (called the synovium) that surrounds a tendon. Symptoms of<unk>  include pain, swelling , and difficulty moving a particular joint where the inflammation occurs.   When the condition causes the finger to "stick" in a flexed position, this is called "stenosing"<unk> , which is commonly called "Trigger Finger."
When the finger tendon is inflamed, the synovium swells. Sometimes the tendon cannot slide easily through the synovium. When you straighten your finger, the tendon locks or sticks as it squeezes through the too-small synovium.
It usually occurs with tendinitis and it is related to stenosing<unk> .
Tenosynovitis
Olecranon bursitis
Retrocalcaneal bursitis
Achilles tendinitis
Tennis elbow
Stenosing tenosynovitis
Prepatellar bursitis
Calcific tendinitis