Rhizarthrosis affects up to 33% of women and 11% of men over age 50, making it one of the most common forms of hand osteoarthritis. But why do some people develop it and others don’t?
Understanding the risk factors helps patients recognise early warning signs and take preventive action. This page summarises the latest epidemiological research on rhizarthrosis.
Key Risk Factors
- Sex — Women are 2–3x more likely to develop rhizarthrosis, possibly due to hormonal and ligament laxity differences
- Age — Prevalence increases sharply after 50, with radiographic changes present in up to 80% of people over 80
- Genetics — Family history is a strong predictor; twin studies suggest 40–65% heritability
- Joint hypermobility — Ligament laxity at the CMC joint increases susceptibility
- Occupation — Repetitive pinch-grip activities (e.g., dental work, assembly lines) increase risk
- Hormonal factors — Post-menopausal women are disproportionately affected
- Previous injury — Fractures or dislocations at the thumb base raise long-term risk
Research & Articles
Browse all 9 evidence-based articles in this category:
Why Does Thumb Arthritis Affect Women More Than Men?
Key Takeaways If you are a woman who has been diagnosed with thumb arthritis, you may have noticed that you […]
Can Scientists Grow Thumb Cells to Study Your Arthritis Pain?
If you have pain and stiffness at the base of your thumb, you are not alone. Many people live with […]
What Can Physiotherapists Teach Us About Hand Pain and Job Stress?
If you are dealing with thumb pain or rhizarthrosis, you might be curious about the people who help treat it. […]
Could a Rare Gene Problem Cause My Joint Pain and Other Health Issues?
If you have thumb pain or other joint troubles, you might think it is just wear and tear. But sometimes, […]
Does Handling Banknotes Lead to Thumb Pain or Rhizarthrosis?
Thumb pain can feel strange and worrisome, especially if tasks you do every day seem to make it worse. Today, […]
Why does my thumb hurt? Understanding rhizarthrosis and more
If you’ve been feeling pain in your thumb or have been told you might have rhizarthrosis, you’re not alone…
Could Your Genetics Be Affecting Your Thumb Pain?
Thumb pain can make even the easiest tasks—like holding a pen or opening a jar—feel impossible. You’re not alone if […]
Does your job cause thumb or finger pain?
If you have pain in your thumb or fingers, you might wonder why it’s happening. Could it be because of […]
Is Your Thumb Pain Actually Rhizarthrosis?
Thumb pain troubles many people, often making everyday tasks harder than they should be. Today, we’re looking at a rare…
Frequently Asked Questions
Is thumb arthritis hereditary?
Genetics play a significant role. Twin studies show 40–65% heritability for hand osteoarthritis. If your parents or siblings have rhizarthrosis, you have a higher risk of developing it.
Can I prevent rhizarthrosis?
While you can’t change your genetics, you can modify risk factors: avoid repetitive forceful pinching, maintain hand strength with exercises, use ergonomic tools, and discuss joint protection with an occupational therapist.
Why is rhizarthrosis more common in women?
The exact reason isn’t fully understood, but contributing factors include: looser ligaments at the CMC joint, hormonal changes after menopause, smaller joint surface area, and possibly different cartilage biology.
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Medical Disclaimer: This information is based on published scientific research and is intended for educational purposes only. It does not replace professional medical advice. Always consult your doctor or hand surgeon for personalised treatment recommendations.