Pectus Carinatum: Will It Improve or Worsen During Puberty? What Parents Need to Know

Introduction

“Doctor, now that my child has entered puberty, will his Pectus Carinatum get better on its own?”
“I’ve heard that running and exercising more can make the chest shape normal – is that true?”
“My child has a physical fitness exam coming up. Will Pectus Carinatum become more severe?”

During school breaks, we often hear these anxious questions from parents.

Puberty is a critical period for a child’s physical and psychological development, and it is also the stage when parents of children with pectus carinatum feel most anxious. Today, we will provide an objective, medically based analysis of the relationship between puberty and pectus carinatum, helping parents respond scientifically.

1. Pectus Carinatum During Puberty: Why Does It Sometimes Worsen?

Pectus carinatum is a chest wall deformity in which the sternum and adjacent costal cartilages protrude forward. It is associated with genetic factors and abnormal costal cartilage development.

Puberty is indeed a stage when pectus carinatum may worsen, mainly for three reasons:

1. Rapid Skeletal Growth Magnifies the Deformity

Puberty (typically ages 12–18) is the second peak period of skeletal development. During this time, the costal cartilages grow actively. If there is a congenital developmental abnormality, the protruding sternum becomes more noticeable as the skeleton grows.

Think of a small tree that grows crooked – as the trunk gets taller, the angle of crookedness often becomes more obvious than when it was a seedling.

2. Increased Muscle Strength Contrasts the Chest Abnormality

Puberty is also a period of rapid muscle growth. The pectoral muscles on the front of the chest become more developed. In patients with pectus carinatum, the protruding sternal area cannot be covered by muscle. This “give‑and‑take” makes the protrusion appear more prominent.

3. Hormonal Changes Affect Connective Tissue

Hormone levels fluctuate significantly during puberty, which may affect the elasticity and resilience of the costal cartilages and sternum, potentially worsening the deformity to some degree.

⚠️ A common misconception: Pectus carinatum does not resolve on its own with age. Many parents hope that “it will get better as the child grows.” In reality, without intervention, pectus carinatum usually persists or remains unchanged after puberty.

2. Puberty Is Also a Golden Window for Treatment

Although puberty makes pectus carinatum more noticeable, this does not mean nothing can be done. On the contrary, puberty is the optimal window for non‑surgical treatment of pectus carinatum.

Why?

3. Scientific Approach: Proper Use of the Pectus Carinatum Brace

For mild to moderate pectus carinatum, the Pectus Carinatum Brace (chest compression brace) is a widely recognized non‑surgical correction method.

How Does the Brace Work?

The brace applies customized, sustained pressure to the protruding sternal area. Combined with regular breathing exercises, it guides the sternum and costal cartilages to gradually remodel toward a normal shape. The principle is similar to orthodontic treatment – using sustained, gentle external force to reshape the bones during a stage when they still have good plasticity.

Advantages of Using a Brace During Puberty