CMC arthritis, also known as basal joint arthritis or thumb arthritis, is a painful condition affecting the joint at the base of your thumb.
Understanding the CMC Joint
The carpometacarpal (CMC) joint is where your thumb (metacarpal) bone meets your wrist (carpal) bone. This joint is essential for many hand movements, particularly gripping and pinching. Over time, this joint can become worn leading to discomfort and reduced function.
What Causes CMC Arthritis?
The primary cause of CMC arthritis is the wear and tear of the joint, which often occurs with age. According to the provided reference, as the CMC joint becomes worn, it can lead to this painful condition known as thumb arthritis, also referred to as CMC arthritis or basal joint arthritis.
Key Aspects of CMC Arthritis
| Feature | Description |
|---|---|
| Location | Base of the thumb where it meets the wrist. |
| Cause | Typically due to wear and tear over time (often associated with aging). |
| Common Name | CMC arthritis, thumb arthritis, or basal joint arthritis. |
| Result | Pain, stiffness, and reduced ability to use the thumb effectively. |
Symptoms of CMC Arthritis
- Pain at the base of the thumb
- Stiffness in the thumb joint
- Weakness when gripping or pinching
- Swelling and tenderness around the thumb base
- A decreased range of motion
- Deformity of the joint in later stages
Treatment Options
- Pain Relief: Over-the-counter pain medications or prescription NSAIDs (nonsteroidal anti-inflammatory drugs) can help reduce pain and inflammation.
- Splinting: Wearing a splint can stabilize the thumb joint and provide support to reduce pain.
- Injections: Corticosteroid injections may be used to decrease inflammation and provide temporary pain relief.
- Physical Therapy: Targeted exercises may improve strength, range of motion, and flexibility in your thumb and hand.
- Surgery: In severe cases, surgery such as joint fusion or joint replacement may be required.
Conclusion
CMC arthritis is a common type of arthritis, primarily caused by joint wear, that affects the thumb joint at the base of the hand and can significantly impact daily activities.
