Thumb Arthritis

Understanding Thumb Carpometacarpal (CMC) Arthritis

Thumb Carpometacarpal Arthritis is a condition that affects the joint at the base of your thumb, causing pain, stiffness, and difficulty with activities that involve gripping or pinching.

Common Symptoms:

  • Pain and Tenderness: Pain at the base of the thumb, often aggravated by gripping or pinching.

  • Stiffness: Difficulty moving the thumb, especially in the morning or after periods of inactivity.

  • Swelling and Tenderness: Swelling and tenderness may be present at the base of the thumb joint.

How It Happens: The thumb's carpometacarpal joint is where the thumb bone (metacarpal) connects to a wrist bone (trapezium). With CMC arthritis, the cartilage covering the ends of these bones wears away, leading to increased friction and inflammation in the joint. This can result in pain, stiffness, and difficulty moving the thumb.

Factors Contributing to Thumb CMC Arthritis:

  • Age: It is more common as people age, especially in individuals over 50.

  • Gender: Women are more often affected.

  • Joint Overuse: Repetitive gripping or pinching activities may contribute.

  • Genetics: A family history of arthritis may increase the risk.

Treatment Options:

  1. Rest and Activity Modification: Give your thumb time to rest and avoid activities that worsen symptoms.

  2. Splinting: Wearing a splint to support the thumb and limit movement.

  3. Medication: Nonsteroidal anti-inflammatory drugs (NSAIDs) for pain and inflammation.

  4. Hand Therapy: Exercises to improve thumb strength and flexibility.

  5. Corticosteroid Injections: Injections into the joint for short-term relief of pain and inflammation.

  6. Surgery: For severe cases, surgical options like joint reconstruction or joint replacement may be considered.

Self-Care and Lifestyle Adjustments:

  • Cold Compresses: Applying cold packs can help reduce swelling and ease pain.

  • Assistive Devices: Using adaptive tools to reduce stress on the thumb joint during daily activities.

  • Hand Exercises: Gentle exercises to maintain thumb mobility and strength.

When to Seek Medical Attention: If you experience persistent pain, swelling, or difficulty using your thumb, consult a healthcare professional for an accurate diagnosis and appropriate treatment.

Remember, managing thumb CMC arthritis involves a combination of medical interventions, lifestyle adjustments, and self-care practices to improve symptoms and maintain hand function.

Note: This handout provides general information and is not a substitute for professional medical advice. Consult with a healthcare provider for personalized guidance based on your specific condition.