Areas of tendonitis include the finger and wrist joints and the ankle, and the long head of the biceps tendon.
Muscle contractions cause movement in the joints, and the tendon sheaths are located around the joints and primarily limit the range of motion of the tendons. Muscle contraction pulls the tendon within the tendon sheath. Frequent tendon activity can cause excessive friction of the tendon within the tendon sheath, causing swelling, hyperplasia, and hypertrophy of the tendon sheath, leading to aseptic inflammation of the tendon sheath, as in the case of the tendon of the long head of the biceps brachii.
Finger and wrist joints, which are often subjected to excessive activities, are also most prone to aseptic inflammation of the tendon sheaths. The main clinical manifestations are pain and tenderness in the finger and wrist joints, aggravated by activity.
After the appearance of tenosynovitis should be actively treated, otherwise it will lead to recurrent clinical symptoms, affecting the patient’s normal life and work.