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Radiological changes after Nuss operation for pectus excavatum.

Artūras Kilda¹, Saulius Lukosevicius, Vidmantas Barauskas

¹Department of Pediatric Surgery, Kaunas University of Medicine, Eiveniu 2, 50009 Kaunas, Lithuania.

Medicina (Kaunas, Lithuania)

|October 17, 2009

Summary

The Nuss procedure significantly increases sternovertebral distance in children with funnel chest, with chest wall deformation restoration continuing throughout the first year post-operation. Measurements indicate sustained improvement after bar removal.

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Area of Science:

Thoracic surgery
Pediatric surgery
Medical imaging

Background:

Funnel chest (pectus excavatum) is a congenital chest wall deformity.
The Nuss procedure is a minimally invasive surgical technique used to correct pectus excavatum.
Evaluating post-operative changes in chest dimensions is crucial for assessing surgical outcomes.

Purpose of the Study:

To assess changes in sternovertebral distance following the Nuss procedure.
To evaluate the degree and progression of chest wall deformation after surgery.
To compare the effectiveness of Haller and vertebral indexes in depicting chest deformation dynamics.

Main Methods:

Chest radiographs (anteroposterior and lateral) were taken pre-operatively and at 1, 6, and 12 months post-Nuss procedure.
Measurements included sternovertebral distance and transversal chest dimension.
Haller and vertebral indexes were calculated to quantify chest wall deformity.

Main Results:

Sternovertebral distance significantly increased from pre-operative measurements (79.81 mm) to 12 months post-operation (113.6 mm).
A significant decrease in transversal chest dimension was observed within the first month post-surgery.
The sternovertebral distance showed continued restoration throughout the first year, with a slight decrease after bar removal.

Conclusions:

The Nuss procedure effectively increases sternovertebral distance and corrects chest wall deformation.
Chest wall deformation restoration is an ongoing process during the first year after the Nuss procedure.
The vertebral index provides a more accurate depiction of deformation dynamics compared to the Haller index.