Thumb Base Arthritis & Thumb Joint Replacement
Thumb base (CMC) arthritis is one of the most common causes of hand pain, particularly in women and active patients over time.
The thumb base joint experiences large forces during gripping and pinching. Over time, ligament laxity, altered mechanics, repetitive loading, and joint wear may lead to progressive arthritis and instability.
Patients commonly notice:
- Pain opening jars
- Reduced grip or pinch strength
- Difficulty turning keys
- Weakness lifting objects
- Pain with writing or prolonged use
- Grinding or clicking
- Loss of confidence using the hand
Many patients cope well with:
- Splinting
- Activity modification
- Anti-inflammatory medication
- Injections
- Hand therapy
When symptoms become persistent and function is significantly affected, surgery may become appropriate.
Traditional surgical treatment has often involved trapeziectomy-based procedures, which remain excellent operations in many situations. Modern thumb joint replacement techniques may also offer selected patients a motion-preserving alternative.
Thumb joint replacement aims to:
- Preserve movement
- Maintain pinch function
- Restore stability
- Reduce pain
- Support earlier functional recovery in selected patients
Not every patient is suitable for thumb replacement, and careful patient selection is important. Bone quality, activity demands, joint stability, and the pattern of arthritis all influence the most appropriate surgical option.
The goal is always to choose the procedure most likely to provide durable, reliable function for the individual patient.
Is thumb joint replacement better than trapeziectomy?
Not necessarily. Both are excellent procedures when used appropriately. Thumb replacement may offer selected patients improved movement preservation and faster early functional recovery, while trapeziectomy remains an extremely reliable long-term operation in many situations. The best option depends on the individual patient, anatomy, stability, bone quality, and functional demands.