M20.039

Clinical Causes: Rheumatoid arthritis: The most common cause, where inflammation damages the joint capsules and ligaments, leading to deformity. Trauma or injury: Injuries to the finger can weaken structures, resulting in deformities over time. Genetic predisposition: Some individuals may have a hereditary tendency to develop joint deformities. Other inflammatory conditions: Diseases like psoriatic arthritis or systemic lupus erythematosus can contribute to joint damage. Overuse or repetitive stress: Activities that strain finger joints may, in some cases, contribute to deformities.

Key Symptoms: Deformity of the finger: Visible curve where the middle joint bends upward and the fingertip points downward. Pain and tenderness: Especially around the affected joints, often worsening with activity. Stiffness: Reduced movement in the affected finger(s), making it difficult to bend or straighten. Swelling: In and around the joint areas. Weak grip: Changes in finger alignment can interfere with grasping objects. Visible swelling or nodules: Sometimes present over the joints.

Diagnosis Path: Diagnosis typically involves a physical examination of the hand and fingers to observe deformities and assess joint flexibility. Imaging tests like X-rays may be ordered to evaluate joint damage, bone changes, or to rule out other conditions. Medical history focusing on the duration and progression of symptoms aids in confirming the diagnosis.

Treatment Protocols: Treatment options aim to reduce symptoms, improve function, and prevent further deformity. They may include: - **Splinting or bracing:** To support the finger and limit deforming movements. - **Medications:** Nonsteroidal anti-inflammatory drugs (NSAIDs) to reduce inflammation and pain. - **Physical therapy:** Exercises to maintain joint mobility and strength. - **Injections:** Corticosteroid injections to decrease inflammation in the joint. - **Surgical intervention:** In severe cases, procedures may be recommended to straighten the finger or repair damaged tissues. Early diagnosis and intervention can help in managing the symptoms effectively and maintaining finger function.