If you have severe thumb arthritis and your thumb bends backward in a strange way when you pinch, you may wonder if surgery can help. This article looks at a real case of a woman with the most advanced stage of thumb arthritis. She also had a thumb that bent too far back. Doctors helped her using a special surgery that fixed both problems at once.
Key Findings at a Glance
- A 57-year-old woman had stage 4 thumb arthritis, which is the most severe stage, with a thumb that bent back 30 degrees when pinching.
- She was successfully treated with a modified surgery that removed the damaged joint and added a procedure to stabilize the thumb.
- Research shows that fixing only the arthritic joint may not work if other parts of the thumb are also bent or unstable.
- According to this study, all deformities must be corrected at the same time for the best results.
- Studies indicate that a global approach to thumb arthritis treatment improves pain relief and thumb function.
Here are three important points from this research:
- Severe thumb arthritis can come with other problems like thumb joints that bend too far.
- Fixing the whole thumb, not just one joint, leads to better results.
- A surgery combining joint removal and thumb stabilization helped one patient get back pain-free function.
In this article:
- What Happened to This Patient?
- What Is Rhizarthrosis and Why Does the Thumb Bend Back?
- How Did the Surgery Work?
- Why Does Treating the Whole Thumb Matter?
- Frequently Asked Questions
- What This Means for You
- Disclaimer
- Scientific Article
What Happened to This Patient?
According to this study, a 57-year-old woman came to the doctor with pain at the base of her right thumb. Her right hand was the one she used most often. The pain had been getting worse for two years.
When doctors checked her thumb, they saw something interesting. Her thumb bent backward 30 degrees when she tried to pinch something. This is called hyperextension. Most thumbs do not bend this much backward.
You may be wondering why this matters. When a thumb bends too far back, it makes pinching and gripping harder. It can also make pain worse even after surgery on the arthritic joint.
X-rays showed that she had Eaton stage 4 arthritis. This is the worst stage of thumb arthritis at the base of the thumb. The joint where the thumb connects to the wrist was very damaged.
The good news is that her other thumb joint, the one in the middle of her thumb, did not have arthritis. It was just too loose and bent back too much.
What Is Rhizarthrosis and Why Does the Thumb Bend Back?
Let us look closer at what rhizarthrosis means. Rhizarthrosis is a big word for arthritis at the base of the thumb. This is where your thumb bone meets a small wrist bone called the trapezium.
Doctors use a system called the Eaton stages to measure how bad the arthritis is. Stage 4 is the most advanced. At this stage, the cartilage that cushions the joint is gone. The bones rub together and become damaged.
Here is where it gets interesting. When the base of the thumb gets very arthritic, the thumb can start to collapse and change shape. Sometimes the middle joint of the thumb, called the metacarpophalangeal joint or MCP joint, bends backward to make up for the damaged base.
This backward bending happens over time. Your body tries to pinch and grip by changing how the thumb works. But this makes the thumb unstable and weak.
How Did the Surgery Work?
Research shows that this patient was treated with two procedures at the same time. The first procedure is called a modified Burton-Pellegrini arthroplasty. This is a surgery where doctors remove the damaged trapezium bone at the base of the thumb.
After removing the bad bone, doctors use a piece of tendon from the wrist to fill the space. This acts like a cushion. It keeps the thumb bones from rubbing together.
But that was not enough for this patient. She also needed a second procedure called sesamoidesis. This procedure fixes the middle thumb joint so it does not bend backward anymore.
According to this study, the surgery was successful. The patient got pain relief. Her thumb became stable. She could pinch and grip again without her thumb bending the wrong way.
Why Does Treating the Whole Thumb Matter?
The doctors who wrote this study made an important point. They said that fixing only the arthritic joint at the base of the thumb is not always enough.
If the middle thumb joint is also deformed or unstable, the surgery results may not be as good. The thumb may still hurt. It may still be weak. It may still bend in strange ways when you try to use it.
Studies indicate that doctors must look at the whole thumb before planning surgery. They need to check all the joints. They need to see how the thumb moves. They need to measure any bending or instability.
According to medical evidence, when all deformities are corrected together, patients do better. They get more pain relief. They get better strength. They can use their thumb more easily in daily life.
This is called a global approach. It means looking at the big picture, not just one problem.
What Does This Mean for Surgery Planning?
If you are thinking about surgery for severe thumb arthritis, your doctor should check your whole thumb. Here are some things they might look at:
- How much your thumb bends backward when you pinch
- Whether other thumb joints are loose or unstable
- How strong your grip and pinch are
- What your x-rays show about all the thumb joints
If you have more than one problem, you may need more than one procedure at the same time, just like the woman in this study.
About This Site
This website helps people understand thumb pain and rhizarthrosis by simplifying medical science. We only use information from published scientific articles. We explain research in plain language so you can make informed decisions about your health. We invite you to explore more articles on thumb arthritis, treatment options, and ways to manage your symptoms.
Frequently Asked Questions
What is Eaton stage 4 thumb arthritis?
Eaton stage 4 is the most severe stage of thumb arthritis at the base of the thumb. At this stage, the cartilage is completely worn away. The bones rub together and become damaged. There may also be arthritis in nearby joints. This stage causes the most pain and loss of function.
Why does my thumb bend backward when I pinch?
When the base of your thumb is damaged by arthritis, your thumb may change shape over time. The middle joint of your thumb may become loose and bend backward to help you pinch. This is your body trying to work around the damaged joint. But it makes your thumb weak and unstable.
Can surgery fix both the arthritis and the backward bending?
Yes, according to this study. Doctors can do two procedures at the same time. One procedure removes the damaged bone at the base of the thumb and adds a cushion. The other procedure stabilizes the middle thumb joint to stop it from bending backward. Fixing both problems together gives better results.
What is a Burton-Pellegrini arthroplasty?
A Burton-Pellegrini arthroplasty is a type of thumb surgery. The surgeon removes the damaged trapezium bone at the base of the thumb. Then the surgeon uses a piece of tendon to fill the space and cushion the thumb. This relieves pain and keeps the thumb stable.
What This Means for You
If you have severe thumb arthritis and your thumb bends or moves in strange ways, know that there is hope. Surgery can help even in the most advanced cases.
The key lesson from this research is simple. Your doctor should look at your whole thumb, not just the arthritic joint. All deformities should be fixed at the same time for the best outcome.
Talk to your doctor about your symptoms. Show them how your thumb moves. Ask if you have other problems besides arthritis. Together, you can make a plan that fits your needs.
Remember, every person is different. What worked for the woman in this study may not be exactly what you need. But the idea is the same. A complete approach gives you the best chance for a pain-free, strong, and mobile thumb.
Disclaimer
This article is for informational purposes only. It is not medical advice. It does not replace a consultation with a qualified healthcare provider. Always talk to your doctor about your symptoms and treatment options. Only your doctor can diagnose your condition and recommend the right treatment for you.
Scientific Article
Study by: Faour-Martin, O.; Martin-Ferrero, M. A.; Valverde-Garcia, J. A.; Vega-Castrillo, A.; De La Red-Gallego, M. A. (2013)
Published in: Int J Surg Case Rep
Read the full study:
https://doi.org/10.1016/j.ijscr.2013.07.028
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