Vacuum Bell Therapy for Pectus Excavatum: Does It Really Work?

Does vacuum bell therapy really work for pectus excavatum? What the research shows, who benefits most, and how ScolioLife Singapore supports non-surgical correction of a sunken chest.

Short answer: for the right patient, yes – vacuum bell therapy can noticeably improve the appearance of a sunken chest without surgery. But it is not a quick fix. It works best in children and teenagers whose chest walls are still flexible, it rewards daily consistency over months to years, and individual results vary. Here is what the evidence actually shows, who tends to benefit most, and how we think about it at ScolioLife in Singapore.

What Is Pectus Excavatum?

Pectus excavatum – often called “sunken chest” or “funnel chest” – is the most common chest-wall difference, where the breastbone sits deeper than the surrounding ribs. It affects roughly 1 in 300 to 1 in 1,000 people and is several times more common in boys. In Singapore, parents often first notice it during the rapid growth spurts of puberty, and it is sometimes picked up at school health screening or during the pre-enlistment medical for National Service. Many cases are mild and mainly cosmetic, but deeper depressions can affect confidence, breathing during sport, and posture.

How Vacuum Bell Therapy Works

The device is a silicone cup connected to a hand pump. Placed over the chest, the pump removes air to create a vacuum that gently lifts the sternum outward. Worn daily – often starting at a few minutes and building up to an hour or more, over months to years – the repeated lifting may encourage the flexible chest wall to gradually remodel into a flatter shape. Introduced in the early 2000s, it has become a popular conservative alternative to surgery because it avoids the risks of an invasive operation.

What the Research Actually Shows

The evidence is encouraging but still maturing. In one long-term study of more than 250 patients, the overall rate of meaningful improvement was around 52%, with better outcomes in those who used the device consistently and for longer. Among committed multi-year users, roughly 25% achieved an excellent correction and a further 18% a good correction. Age matters: children who begin before about age 11 tend to respond best, because younger chest walls are more pliable. Most reviews conclude that vacuum bell therapy is a safe, cost-effective option for selected patients, while noting that more high-quality trials are still needed.

Who Gets the Best Results?

Vacuum bell therapy does not suit everyone equally. The strongest candidates tend to share a few traits:

• Children and teenagers with flexible chest walls, ideally starting before age 11
• Mild to moderate depressions rather than very deep or markedly asymmetric ones
• A realistic willingness to wear the device daily for an extended period
• Good supervision and a consistent schedule, ideally paired with posture and breathing work

Vacuum Bell Therapy vs Surgery (the Nuss Procedure)

For some patients, the device improves the chest enough that surgery is no longer needed – including people who had initially planned to have it. However, surgery such as the Nuss procedure may still be advised when the depression is severe or significantly affects heart or lung function, where it can offer more reliable structural correction. The two approaches are not really rivals; they are different tools for different severities, and the right choice depends on an individual assessment.

The ScolioLife Approach: More Than the Device

At ScolioLife, we see the chest wall as part of your whole posture, not an isolated dent. A vacuum bell works best when it is fitted properly, used on a sensible progressive schedule, and combined with breathing exercises and postural correction that open the chest and support the change. We help patients in Singapore choose a suitable vacuum bell system, learn to use it safely, and track progress over time. Because posture and chest shape are linked, many patients also find our guide to pectus excavatum, posture and rounded shoulders useful, and our overview of non-surgical pectus excavatum correction explains how assessment and management fit together. Every case is different, and individual results vary.

Frequently Asked Questions

How long until I see results? Most people use the device daily for many months before changes settle, and full programmes often run from one to several years. Early, consistent use generally brings the best response.

Does it hurt? It should feel like firm suction, not pain. Mild redness, a temporary skin ring, or minor bruising can occur and usually fade. Build up wearing time gradually rather than over-tightening.

Is there an age limit? Younger, more flexible chests respond best, but motivated teenagers and some adults can still see improvement – the change is simply slower and often more modest with age.

Can adults use it? Yes, though a stiffer adult chest wall responds less readily. A proper assessment helps set realistic expectations before starting.

Is the vacuum bell available in Singapore? Yes. ScolioLife can advise on sizing, safe use, and pairing the device with posture and breathing work at our clinic on Orchard Road.

Take the First Step

If you or your child has a sunken chest, an early assessment can help clarify whether vacuum bell therapy is a sensible option and what results are realistic. To arrange a non-surgical chest-wall and posture evaluation at our Singapore clinic at Tong Building, 302 Orchard Road, get in touch with the ScolioLife team. Every chest is different and should be individually assessed.