Thumb position is one of the most technically demanding transitions a cellist faces—and one of the most common sources of hand pain. If you’ve been struggling with discomfort on the side of your thumb, read on. With the right approach and a little patience, it doesn’t have to hurt.
A student recently asked me: “How long before the pain on the side of the thumb subsides when practicing in thumb position?” It’s a question I hear often—and one I’m well-positioned to answer, having trained at Juilliard under faculty who were famously uncompromising about technique.
The honest answer: it depends. But there’s a lot you can do to speed up the process and protect yourself along the way.
How Long Does It Take?
Over time, the side of the thumb will develop a callous, and the arm muscles will strengthen to support the thumb more efficiently. How quickly this happens depends largely on how often you practice in thumb position. For some players, discomfort subsides within weeks. For others, it takes months—or longer. The key is not to rush the process.
Start with Harmonics
One of the best ways to begin is by practicing with the thumb placed across harmonics, rather than stopping the string. Halfway up the fingerboard is a classic starting point—and this is exactly where Rick Mooney’s excellent Thumb Position book focuses its work. I highly recommend it. The book allows students to begin working in thumb position in the early stages of study, and it introduces reading treble clef on the cello in a very approachable way.
When the thumb rests across harmonics, the strings are not being pressed down. This dramatically reduces pressure and makes it an ideal way to acclimate the hand to the position. Once this feels comfortable, transitioning to higher or lower positions—where the thumb does stop the string (similar to a guitar capo)—becomes much easier.
Limit Your Exposure
When you begin stopping the string with the thumb, limit your practice time so the callous can develop gradually. Forcing long sessions too soon increases the risk of injury.
Personally, I used a traditional adhesive bandage wrapped around the thumb when practicing extended passages in thumb position. Some cellists prefer New Skin, a liquid bandage that paints onto the skin and is less likely to shift or fall off.
The drawback: New Skin is sticky, which makes shifting less smooth. It’s a tradeoff—helpful for protection, but not ideal for fluid motion.
Keep the Thumb Down
I still remember a comment written on my end-of-year jury sheet at Juilliard by the legendary cellist Zara Nelsova. In her characteristically direct way, she wrote that I must “always keep the thumb down on the string!” Seeing it in writing ensured I never forgot it.
Do not play in thumb position with the thumb lifted in the air. The thumb is your anchor. It helps you understand spacing between fingers. Without it, you’re essentially driving on a highway with no visual markers.
The thumb should also rest across two strings. It may move from string to string depending on the music, but placing it across only one string compromises stability, while placing it across too many compromises freedom and intonation. Two strings is the balance point.
What to Avoid
Whatever approach you take, avoid practicing to the point of severe pain or injury. Some students take pride in pushing through pain, but this is counterproductive. Progress comes from consistency—not damage.
Final Thoughts
Thumb position is demanding, but it doesn’t have to be painful. With patience, thoughtful pacing, and the right approach, it becomes a powerful and expressive part of the cello’s range.
If you found this helpful, consider subscribing to my newsletter for more technique guides, practice strategies, and cello pedagogy insights delivered directly to your inbox.