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Pectus Excavatum

What is Pectus Excavatum?
Pectus Excavatum, also known as “funnel” chest, is a congenital deformity characterized by a concavity of the sternum. It is the most common type of congenital chest wall abnormality and it occurs in approximately 1 out of every 1,000 children.

Mildly present at birth, Pectus Excavatum usually worsens as the child grows, often magnifying considerably during the teenage years.

The inward facing sternum can affect heart and lung function. The heart is often displaced to the left side of the chest and there is compression of the heart and lungs. Patients may experience shortness of breath, chest pain, mitral valve prolapse, palpitations, and/or respiratory disease.

Patients may also experience emotional side effects including negative self-image and low self-esteem.

The Nuss Technique and Lorenz Pectus Bar
Previously, surgical correction was made through an invasive procedure requiring resection of both cartilage and bone. Dr Donald Nuss, from the United States, developed a minimally invasive surgical procedure using the Lorenz Pectus Bar implant to remodel the chest wall over a 2 to 3 year period.

Traditional Method

  • large incision resulting in longer scar , not aesthetically pleasing.
  • requires cutting of soft bone.
  • tedious procedure.
  • longer operating time.
  • blood loss ~ 300ccs.
  • longer recovery time.
  • may leave patient with more rigid than normal chest.

Nuss Technique

  • minimally invasive, only 3 small incisions (~ 2 inch) needed resulting in little or no scarring, aesthetically pleasing.
  • no need for cutting of soft bone.
  • easier procedure.
  • shorter operating time.
  • reduced blood loss (~10-30ccs).
  • minimal recovery time.
  • will not affect normal appearance of chest.

Technique Highlights


Patient’s chest is measured to determine the size of the bar to be used.


The bar is carefully bent in the shape of the desired form of correction.


The bar fits snugly on both sides of the patient, and underneath the patient’s sternum. The bar is secured by a stabilizer. The bar is worn for approximately 2-3 years.

Pre-Operative   Post-Operative

The Nuss Technique represents significant advantages and benefits over the traditional corrective treatment, and complications of this surgery are uncommon. However, with any surgery there are risks involved.  Please consult your surgeon for these risks and for post-operative guidelines to ensure optimal results.


For more information about the Technique, Patient Testimonials and Frequently Asked Questions, you can visit:

English (英文):

Chinese (华文):      

Newspaper articles in Singapore:
The Straits Times (Mind Your Body)
Lian He Wan Bao
Shin Min

This minimally invasive procedure is available locally and has gained acceptance in Singapore over the past few years. If you would like to speak to a trained surgeon about this, please kindly contact us at and we will refer you to one:

Tel: 6767 1311
Bluestone Corporation Pte Ltd

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