Thumb pain can be incredibly frustrating, especially if it gets in the way of things you love to do. If you have rhizarthrosis—arthritis in the base of your thumb—it might feel like even simple tasks are painful. But can a prosthetic implant help?
Recently, a scientific study looked into the ISIS® trapeziometacarpal prosthesis, a type of implant for thumb arthritis. By following up with patients for over five years, the researchers shared important insights about its effectiveness and longevity. Here’s what they found:
- Most people felt less pain and their thumbs worked much better after the procedure.
- Some issues like loosening of parts of the prosthesis were observed.
- Using screws instead of cement seemed to reduce problems like loosening.
In this article:
- What is thumb arthritis?
- How does a prosthesis help?
- What did the study find?
- Frequently Asked Questions (FAQ)
- What should you do next?
- Disclaimer
- Study citation
What is thumb arthritis?
Thumb arthritis, also called rhizarthrosis, happens when the cartilage in the base of your thumb wears down. Cartilage is the cushioning material between your bones that helps them move smoothly. Without it, the bones rub against each other, causing pain and stiffness. This can make gripping and pinching movements tough.
How does a prosthesis help?
Doctors can replace the damaged joint with a prosthetic implant, like the ISIS® trapeziometacarpal prosthesis. A prosthesis is a specially designed replacement part made to work like your natural joint but without the pain. This allows smoother movements and less discomfort.
What did the study find?
How long does the prosthesis last?
You might wonder, “If I get a prosthesis, will it last long enough?” This study tracked 77 implants used in surgeries over five years or more and found an impressive survival rate of 94%. That means the prosthesis stayed functional and didn’t need removing in over 9 out of 10 cases.
Here’s the survival data:
| Total Implants | Survival Rate | Mean Follow-Up Period |
|---|---|---|
| 77 | 94% | 107.5 months |
Did it help with pain and movement?
Good news! Most people in the study experienced better movement and less pain after receiving the implant. This means the prosthesis helped restore function and make activities much easier.
What problems did they find?
While the prosthesis works for most people, a few faced issues with the cup or stem inside the implant loosening over time. The cup is the part that replaces the socket of your thumb joint. The researchers found that cemented cups, which use a glue-like material to stay in place, loosened more often than screwed cups, which are physically attached to the bone with screws.
Out of 77 implants, 14 cups and 3 stems were loose, needing adjustments. In five cases, the prosthesis had to be removed and replaced with another treatment method called trapeziectomy, where part of the bone is taken out. But don’t worry—removal was rare.
Was the survival rate still high?
Here’s where it gets interesting: Even with some cases needing revision, the survival rate remained high at 94%. This suggests that the majority of implants worked well for many years.
Frequently Asked Questions (FAQ)
What causes thumb arthritis?
Thumb arthritis happens when the joint wears down over time. This is sometimes due to aging or repeated movements, but it can happen to anyone.
What is a trapeziometacarpal prosthesis?
It’s a device that replaces the damaged base joint of your thumb with artificial parts to reduce pain and improve movement.
Is this surgery safe?
Yes, this study showed that complications are uncommon, with most people finding relief and improved function. However, as with any surgery, there’s always some risk.
How long does the implant last?
The study found that the majority of these implants stayed functional for more than five years, with a survival rate of 94%.
What should you do next?
If thumb pain is making your daily life tough, you don’t have to suffer quietly. Check with a healthcare provider to discuss your symptoms and treatment options, including prosthetic implants. While surgery might seem like a big step, studies like this show it can be an effective solution.
This site is dedicated to helping you learn about medical science related to thumb pain and rhizarthrosis backed by scientific studies. Explore more informative content to find answers and solutions tailored for you!
Disclaimer
This article provides educational information based on scientific research. It is not a substitute for professional medical advice. Consult your doctor for advice specific to your health.
Study citation
Fauquette, P. J.; Deken-Delannoy, V.; Chantelot, C.; Saab, M., 2023. “The ISIS(R) prosthesis in 77 cases of trapeziometacarpal arthritis: outcomes and survival at a minimum follow-up of 5 years.” Available at: https://www.ncbi.nlm.nih.gov/pubmed/36165407
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