What’s the difference between VBT and ASC?

How is Anterior Scoliosis Correction (ASC) better than VBT? (ASC vs VBT)

Scoliosis inherently is a process by which the spine is already tethered, and in our opinion, the terms ‘tether’ and ‘tethering’ used to describe the technique we perform are not medically accurate. In most cases, spinal curvatures like scoliosis, and particularly with hypokyphosis, need to be “de-tethered” for optimal correction, hence the more comprehensive and accurate term of Anterior Scoliosis Correction (ASC) and not VBT (Vertebral Body Tethering).

The distinction between Vertebral Body Tethering (VBT), and Anterior scoliosis correction (ASC) is an important one best exemplified by who can be treated:

VBT ASC*
Curve 40-65 degrees Yes Yes
Flexible Curves Yes Yes
Growing Spine Yes Yes
Curves over 65 degrees No Yes
Stiff Curves No Yes
Mature Adolescents No Yes
Adult Curves No Yes
Complex Curves No Yes
*uniquely pioneered by Drs. ABC

For this and many of the reasons listed above, Drs. Antonacci, Dr. Betz and Dr. Cuddihy who are pioneers in this field prefer ASC. Furthermore, it is the opinion of Drs. ABC that ASC yields aesthetically appealing cosmetic incisions hidden under the arms better than VBT.


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