Thumb joint replacement, similar to hip or knee replacement, involves removing the damaged joint and replacing it with an artificial one.
Here's a breakdown of the procedure:
The damaged thumb joint is removed, and an artificial implant is used as a replacement. Early implants were made of silicone, but now surgeons primarily use metal or pyrocarbon prostheses, along with synthetic spacers that cushion between the bones.
| Step | Description |
|---|---|
| 1. Joint Assessment | The surgeon evaluates the extent of the joint damage using X-rays and other imaging techniques. |
| 2. Incision | An incision is made over the thumb joint to access it. |
| 3. Joint Removal | The damaged portions of the bones forming the thumb joint are carefully removed. |
| 4. Implant Placement | The artificial implant (prosthesis) is positioned and secured to the remaining bone. This may involve using bone cement or allowing the bone to grow into the implant. |
| 5. Spacer Insertion (If Applicable) | Synthetic spacers may be inserted between the bones to provide cushioning and improve joint movement. |
| 6. Closure | The incision is closed with sutures, and a splint or cast is applied to protect the joint during healing. |
