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J Child Orthop. 2007 Dec;1(6):345-9. doi: 10.1007/s11832-007-0066-9. Epub 2007 Nov 21.

Scoliosis in-brace curve correction and patient preference of CAD/CAM versus plaster molded TLSOs.

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1
Children's Hospital Los Angeles, 4650 Sunset Boulevard #69, Los Angeles, CA, 90027, USA.

Abstract

PURPOSE:

CAD/CAM technology is a newer technique for creating spinal orthoses than standard plaster molded methods. To our knowledge there has been only one previous study of CAD/CAM braces. The purpose of our study was to compare patient preference and in-brace correction of Cobb angle between plaster molded thoracolumbosacral orthoses (TLSO) and CAD/CAM designed TLSOs in a series of patients with scoliosis.

METHODS:

Ten patients with an average initial Cobb angle of 30.8 degrees (range 18 degrees -46 degrees ) had both a plaster molded TLSO and a CAD/CAM TLSO fabricated for them. In each case, the decision to brace was made by the treating surgeon based on curve magnitude and skeletal maturity. After 3 weeks of 23 h a day wear, in-brace correction of the Cobb angle was measured for each brace based on standard PA spine radiographs. After 3 months of use, patients were asked which brace they preferred.

RESULTS:

For the CAD/CAM brace, the mean curve correction after 3 months was 51% compared to 44% in the plaster molded TLSO cohort. (p = 0.46). Seven out of nine patients preferred the CAD/CAM TLSO over the plaster molded TLSO. There were no brace complications in either group.

CONCLUSION:

In our matched cohort study, CAD/CAM TLSOs had at least equivalent if not superior correction of the Cobb angle compared to standard plaster molded TLSOs; 78% of our patients preferred the CAD/CAM brace over the standard TLSO.

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