Thumb CMC Joint Replacement: Regaining Thumb Function with Surgery
An Overview
The thumb is crucial for everyday tasks like gripping, pinching, and grasping. When the joint at the base of your thumb (carpometacarpal or CMC joint) becomes worn due to osteoarthritis, it can cause pain and stiffness, impacting your daily life.
Thumb CMC Joint Replacement Surgery
This surgery aims to replace the damaged trapezium bone in the CMC joint with an implant to:
- Reduce pain and inflammation
- Improve thumb function and movement
- Restore grip strength
Who Needs This Surgery?
It is considered after conservative treatments like pain medication, therapy, and bracing fail to provide relief.
Types of Implants
- Metal: Offers stability and durability.
- Silicone: Provides a more natural feel and movement.
- Tendon graft (LRTI): Uses tissue from your wrist to reconstruct the joint.
Surgical Procedure
The specific approach depends on the chosen implant. Generally, the surgeon:
- Removes the damaged trapezium bone.
- Inserts the chosen implant to replace it.
- Secures the implant in place.
Recovery
- Your thumb will be immobilized in a cast for 3-4 weeks.
- This will be followed by a removable plastic splint for 4-6 weeks, worn at all times except for specific exercises.
- Physical or occupational therapy helps regain movement and strength, typically taking 6-8 weeks for full recovery.
Important to Remember
- Discuss your individual case with your doctor to determine if this surgery is right for you.
- While successful, there might be some limitations in movement or strength compared to a healthy thumb.
- Proper rehabilitation plays a vital role in maximizing recovery and function.