Where is tendonitis located?

Tenosynovitis can occur in many parts of the body, but it mainly occurs in areas with greater mobility, such as the fingers, wrists, forearms, shoulders, and feet.

1. Finger area

Flexor tendon tenosynovitis: This is the most common type of tenosynovitis, which mainly occurs at the metacarpophalangeal joints of the fingers, especially the palmar side of the metacarpal bones. Tenosynovitis may occur at the metacarpophalangeal joints of the thumb, index finger, middle finger, ring finger, and little finger. Patients often show limited flexion and extension of the fingers, accompanied by pain and tenderness, and sometimes snapping fingers.

2. Wrist area

Radial styloid stenosing tenosynovitis: This is a common type of tenosynovitis in the wrist, located on the radial side of the wrist joint at the radial styloid process. When the tendons of the extensor pollicis longus and extensor pollicis brevis pass through the radial styloid process, inflammatory edema is caused due to friction during movement, resulting in pain on the radial side of the wrist joint, weakness in holding objects, and may radiate to the hand or forearm when the pain worsens.

3. Forearms and shoulders

Tenosynovitis of the long head of the biceps brachii: It mainly occurs in the front of the shoulder, located in the intertubercular groove of the humerus. Due to long-term friction of the tendon, inflammatory adhesions are produced, resulting in shoulder pain and limited shoulder joint movement. The pain can radiate to the upper arm and neck, and the pain worsens when the shoulder is extended.

4. Foot

Toe tenosynovitis: Tenderness occurs on the plantar side of the metatarsal head of the affected toe, which is also a common site of tenosynovitis. In particular, the front part of the sole, the forefoot, the heel, and the middle part of the sole, where the weight is concentrated, are prone to tenosynovitis.

Tenosynovitis is a sterile inflammation caused by long-term friction between the tendon and the tendon sheath. It is common in the fingers, wrists, forearms, shoulders, feet and other parts of the body with high mobility. The symptoms of tenosynovitis in different parts of the body may vary, but generally manifest as local pain, tenderness, limited mobility and other symptoms. Once symptoms of tenosynovitis appear, it is recommended to seek medical attention in time.