M18.52

Clinical Causes: Previous injury or trauma to the thumb or wrist Repeated overuse or strain from activities like gripping or lifting Genetic predisposition to joint degeneration Degeneration due to aging Inflammatory conditions that affect joints Structural abnormalities or joint misalignment Certain occupations or hobbies that place extra stress on the thumb joint

Key Symptoms: Pain at the base of the thumb, especially during use Swelling and tenderness around the joint Stiffness, particularly in the morning or after periods of inactivity Reduced grip strength and difficulty with pinching or gripping objects A sensation of joint instability or grinding during thumb movement Visible deformity or bony enlargement around the joint in advanced cases

Diagnosis Path: Diagnosis typically involves a thorough medical history and physical examination focused on the thumb and hand. Imaging tests such as X-rays are crucial for confirming cartilage loss, joint space narrowing, and bone changes characteristic of osteoarthritis. Occasionally, MRI or other imaging modalities might be used to assess soft tissue involvement or rule out other conditions.

Treatment Protocols: Management strategies aim to reduce pain, improve function, and slow disease progression. They may include: - **Conservative measures:** - Rest and activity modification to reduce joint strain - Use of splints or braces to support the thumb - Nonsteroidal anti-inflammatory drugs (NSAIDs) for pain relief - Physiotherapy exercises to strengthen muscles around the joint - Application of heat or cold therapy - **Invasive procedures:** - Corticosteroid injections to decrease inflammation - Surgical options such as joint osteotomy, ligament reconstruction, or joint replacement in severe cases A healthcare professional can tailor a management plan based on the severity and individual needs.