Purpose This review summarizes the experience with the vertical expandable prosthetic titanium rib (VEPTR) device, which enables five new procedures to treat complex spine and chest wall abnormalities in pediatric patients, which cause thoracic insufficiency syndrome, the inability of the thorax to support normal respiration or lung growth. Methods The literature on VEPTR was reviewed and discussed by the author, the inventor of the VEPTR. Results The central VEPTR treatment principle is to correct volume depletion deformity of the thorax, and maintain the correction until skeletal maturity, at which time procedures such as spinal fusion can be considered. For individual cases of complex deformity, VEPTR strategies can differ remarkably. The goal of VEPTR surgery is to pursue the surgical strategy that provides the largest, most symmetrical, most functional thorax that can grow as normally as possible. Assessment of these results is difficult, since natural history of VEPTR-treated diseases are not clearly known and no current imaging test can measure thoracic insufficiency syndrome, but dynamic lung MRI have promise for the future in better defining this potentially lethal condition. Conclusion VEPTR and its principles of use have become an important first step toward improving the quality of life and longevity of children with thoracic insufficiency syndrome, but much work remains to advance both its design and its use.
Keyword VEPTRThe vertical expandable prosthetic titanium rib (VEPTR) was based on a crude Steinmann pin chest wall prosthesis that was placed in an 8-month-old ventilator dependent infant in 1987 who was dying from respiratory insufficiency due to severe rib agenesis and scoliosis. The pins were placed longitudinally to provide a stable perpendicular load orientation for the attachment of the pins to the vestigial proximal and distal ribs, but also in the hope of stabilizing the curve in case the infant did manage to survive. To everyone's surprise, post-operatively the infant was weaned off the ventilator in days, and then oxygen weeks later, going on to grow and thrive. Even the scoliosis improved, likely through rib distraction correcting it indirectly. Once the euphoria wore off, though, the reality of the new long-term problems for the child became apparent. As he became older, his chest and spine would grow, but the non-expandable Steinmann Pin construct would soon became a tether to both spinal growth and the underlying concave lung. Two apparent choices were obvious to continue the clinical success of the chest wall construct. The Steinmann pin prosthesis could be completely changed out periodically through a full thoracotomy with probable skin slough, infection, and eventual failure, or a true chest wall prosthesis could be developed that was easy to implant, providing a stable chest wall and curve control, and would be expandable through periodic out-patient surgery through a limited incisions, which would likely decrease risk of infection and skin slough. The latter course wa...