If you are dealing with thumb pain from arthritis at the base of your thumb, you might be wondering what happens after surgery. Many people worry about the long period when their hand is in a cast. What if there was a simple way to help your thumb heal better during that time?
A recent study looked at something called motor imagery. This is when you imagine moving your thumb without actually moving it. The results are promising. Here is what you need to know.
Key Findings at a Glance
- Women who practiced imagining hand movements during the 3 weeks their hand was in a cast had less pain and better mobility after surgery.
- Motor imagery, which means thinking about movement without actually moving, helped with hand function, strength, and swelling.
- This technique worked for both resting pain and pain during activities.
- The study included 40 women over age 55 who had surgery for thumb arthritis.
- Improvements were seen in quality of life and the ability to use the hand for daily tasks.
In this article:
- What is thumb arthritis and who gets it?
- What is motor imagery and how does it work?
- What did this study do?
- What did the results show?
- Why does this matter for you?
- Frequently asked questions
- What you can take away
- Important information
- Where this information comes from
What is thumb arthritis and who gets it?
Thumb arthritis is also called trapeziometacarpal osteoarthritis. That is a big name. It means the joint at the base of your thumb where two bones meet has worn down over time. The bones are the trapezium and the metacarpal. When the cushion between them wears away, it causes pain and stiffness.
According to this study, this type of arthritis is very common. It is the second most frequent hand problem caused by wear and tear. Even more interesting, 66% of women over the age of 55 have this condition. That is two out of every three women.
When the pain becomes too much, surgery can help. But after surgery, your hand must stay still in a cast for about three weeks. During that time, you cannot move your thumb or hand. This rest helps healing. But it also causes some problems.
What is motor imagery and how does it work?
Here is where it gets interesting. Motor imagery is a technique where you imagine doing movements without actually moving. You close your eyes and picture yourself opening your hand, picking up a cup, or wiggling your fingers. Your body stays still but your brain is working.
Research shows that when you imagine movement, your brain activates many of the same areas that light up when you really move. This mental practice can help keep your brain connected to your hand even when the hand is in a cast.
You may be wondering why this matters. When your hand is immobilized for weeks, your brain can start to forget how to control those muscles. The connection weakens. Motor imagery keeps that connection alive. It is like keeping a path clear in the forest by walking it in your mind.
What did this study do?
The researchers wanted to test if motor imagery could help women recover better after thumb surgery. They recruited 40 women who all had surgery for thumb arthritis. These women were divided into two groups.
One group, called the experimental group, practiced motor imagery during the three weeks their hand was in a cast. This group had 20 women. The other group, called the control group, also had 20 women. They received the usual care without motor imagery.
The researchers measured many things to see if motor imagery made a difference. They looked at:
- Pain levels during rest and during activities
- How well the hand could move
- Strength when pinching with the fingers
- Swelling in the hand and wrist
- Overall quality of life related to arm and hand problems
- How well women could do everyday tasks with their hands
They checked these measurements four different times throughout the study. This way they could see changes over time.
What did the results show?
Let us look closer at what happened. The women who practiced motor imagery had better outcomes in many areas.
Pain improved significantly
The motor imagery group had much less pain. This was true for pain during activities and pain at rest. The improvement was strong enough that researchers said it was very unlikely to happen by chance. Scientists use something called a p value to show this. When p is less than 0.001, it means the finding is very reliable. Pain during activities had p less than 0.001. Resting pain had p less than 0.01.
Movement and flexibility got better
Hand mobility means how easily you can move your fingers and thumb. The motor imagery group showed better hand mobility with p less than 0.001. Range of motion, which is how far you can bend and straighten your thumb, also improved with p less than 0.05.
The researchers also measured something called the modified Kapandji Index. This tests how well your thumb can touch different parts of your hand. It is a way to see if your thumb can reach and function normally.
Swelling went down
Swelling is also called edema. It is when extra fluid builds up in your tissues. The study found that wrist edema was lower in the motor imagery group. This difference had a p value less than 0.04.
Daily life got easier
The study used questionnaires to see how thumb problems affected daily life. One was called the Disabilities of the Arm, Shoulder, and Hand questionnaire. Another was the Cochin Hand Function Scale. These ask about things like opening jars, buttoning shirts, and holding a pen.
According to this study, women who used motor imagery had better scores on quality of life measures. Their hand functionality improved. This means they could do more tasks with less difficulty. The improvement in quality of life had p less than 0.04. Hand functionality after rehabilitation had p equal to 0.02.
Strength showed some improvement
The researchers measured pinch strength. This is how hard you can squeeze between your thumb and fingers. The motor imagery group showed improvements in finger to finger pinch strength right after the motor imagery period ended.
What did not change?
The researchers were honest about their findings. Some measurements did not show statistically significant differences between the two groups. This means that for some variables, the motor imagery group and control group ended up similar.
Why does this matter for you?
If you are facing thumb surgery, the recovery period can feel long and frustrating. Your hand will be in a cast. You cannot use it for everyday tasks. You might worry about stiffness and weakness when the cast finally comes off.
This research suggests that motor imagery could give you something helpful to do during that waiting time. It does not require any equipment. You do not need to move your hand. You simply spend time each day imagining the movements you want to do.
Early intervention means starting something helpful as soon as possible. According to this study, early intervention with motor imagery during the immobilization period could be effective. It may help with pain, quality of life, functional capacity, mobility, range of motion, strength, and swelling.
This does not replace your regular treatment. It is an addition that might make your recovery smoother and faster.
About this site
Our goal is simple. We want to make medical science easier to understand for people dealing with thumb pain and rhizarthrosis. We read published scientific articles and translate them into plain language. Every piece of information comes from real research done by doctors and scientists. We invite you to explore more articles on our site. Each one breaks down a different study so you can make informed choices about your health.
Frequently asked questions
What is motor imagery and is it hard to learn?
Motor imagery is imagining movement without actually moving. You picture yourself doing hand motions in your mind. It is not hard. Most people can do it with a little practice. You might work with a therapist who guides you through the process.
Can motor imagery replace physical therapy after my cast comes off?
No. Motor imagery is something you do during the time your hand is in a cast. Once the cast comes off, you will still need regular physical therapy and rehabilitation. Motor imagery is an addition, not a replacement.
How long do I need to practice motor imagery each day?
The study does not give exact details about how many minutes per day the women practiced. Your doctor or therapist can guide you on a practice schedule if you want to try this technique.
Will my insurance cover motor imagery training?
Coverage varies. Motor imagery training might be included as part of occupational therapy or hand therapy. Check with your insurance provider and your healthcare team to understand your options.
What you can take away
Thumb arthritis is common, especially in women over 55. Surgery can help when pain becomes severe. But the recovery period, especially the three weeks in a cast, can be challenging.
This study shows that motor imagery, which is thinking about movement without actually moving, may help you recover better. Women who practiced this technique had less pain, better movement, less swelling, and improved quality of life.
If you are planning thumb surgery, talk to your doctor or hand therapist about motor imagery. It might be a simple tool to add to your recovery plan. Every bit of improvement can make a difference in getting back to the activities you enjoy.
Important information
This article is for educational purposes only. It is not medical advice. Always talk to your doctor or hand specialist before making decisions about your treatment. Your healthcare team knows your specific situation and can guide you to the best care for your needs.
Where this information comes from
This article is based on research by Prado-Robles, Eva; Delgado-Gil, Jose Ángel; and Seco-Calvo, Jesús, published in Healthcare (Basel, Switzerland) in 2025.