Carpal Metacarpal Arthritis (CMC Disease)

What is Carpal Metacarpal Arthritis (CMC Disease)?

CMC Disease refers to arthritis affecting the base of the thumb, where the first metacarpal meets the wrist.

• Degenerative changes at the thumb joint
• Pain and decreased range of motion

Overview of the Condition

The condition is common in older adults and can significantly affect hand function.

Symptoms

• Pain at the base of the thumb
• Swelling and stiffness
• Weak grip strength

Causes

Wear and tear, overuse, and genetic predisposition contribute to degenerative changes in the CMC joint.

Diagnosis

Diagnosis is confirmed with clinical examination and imaging studies such as X-rays.

Treatment Options

• Splinting and NSAIDs
• Corticosteroid injections
• Surgical joint reconstruction or fusion for advanced cases

Conservative Management

Initial treatment includes activity modification, splinting, and pain management.

Rehabilitation Exercises

1. Range-of-motion exercises for the thumb
2. Strengthening exercises
3. Joint protection techniques

Surgical Options

Surgery may be indicated for severe pain and loss of function, including options like joint replacement or fusion.

Anatomy Overview

The first carpometacarpal joint is located at the base of the thumb and is critical for thumb mobility.

Affected Areas

• Base of the thumb
• Adjacent wrist structures

Frequently Asked Questions

QuestionAnswerCan CMC arthritis be managed non-surgically?Yes, many patients respond well to conservative treatment.What is the expected recovery after surgery?Recovery varies, but rehabilitation is key for optimal outcomes.

Prevention Strategies

• Avoid repetitive thumb strain
• Use ergonomic devices
• Engage in thumb-strengthening exercises

Related Conditions

• Osteoarthritis in other hand joints
• Rheumatoid arthritis

Additional Treatments

Bracing and lifestyle modifications may also be beneficial.