M65.33

Clinical Causes: Repetitive gripping or grasping motions over time that lead to strain and inflammation of the flexor tendons. Injury or trauma to the hand or finger that causes swelling or damage to the tendons or their sheaths. Medical conditions such as rheumatoid arthritis, diabetes, or gout, which can predispose individuals to tendon inflammation. Age-related degeneration of the tendons and their sheaths, more common in middle-aged and older adults. Hormonal changes, particularly in women during pregnancy or menopausal periods, which may influence tissue health. Fungal or bacterial infections, although less common, can also contribute to tendon inflammation.

Key Symptoms: A catching or popping sensation when moving the affected finger, especially during flexion or extension. Stiffness in the middle finger, often worse in the morning or after periods of inactivity. Pain or tenderness at the base of the middle finger, near the palm. A visible bump or nodule on the affected finger or palm, where the tendon sheath is inflamed. Difficulty fully straightening or bending the finger without discomfort or locking. In severe cases, the finger may become stuck in a bent or straight position, requiring manual manipulation to unlock. Swelling or inflammation around the affected area.

Diagnosis Path: Diagnosis of trigger finger in the middle finger typically involves a physical examination where a healthcare provider checks for tenderness, swelling, and a palpable nodule along the finger's flexor tendon. The provider may observe the finger's movement to see if it catches or locks during flexion and extension. Imaging tests such as ultrasound or MRI can be used in uncertain cases to assess the tendon and sheath condition, but often clinical examination alone suffices. Recognizing characteristic symptoms and signs is crucial for accurate diagnosis.

Treatment Protocols: Treatment options for trigger finger in the middle finger aim to reduce inflammation, relieve symptoms, and restore normal finger movement. They include: - Rest and activity modification to minimize strain on the affected finger. - Nonsteroidal anti-inflammatory drugs (NSAIDs) to reduce pain and swelling. - Splinting the finger to immobilize it and allow inflammation to decrease. - Physical therapy exercises to improve flexibility and strength. - Corticosteroid injections directly into the tendon sheath to reduce inflammation and swelling. - In persistent or severe cases, surgical intervention may be recommended. The procedure involves releasing the constricted part of the flexor sheath to allow smoother movement of the tendon. Most cases improve with conservative treatments, but surgical options have a high success rate when needed.