1. A statistic approach to electronic moulding versus traditional plaster moulding Jean Claude de Mauroy, Frédéric Barral, Cyril Lecante

2. Background  Electronic moulding tends to gradually replace the plaster moulding. Is it as effective?  There is no study on the results obtained by this process for the scoliosis.  In the department of orthopaedic medicine of the Clinique du Parc - Lyon, the electronic moulding replaced the traditional plastered moulding in May, 2008.  Are the radiological angular corrections better in brace?

6. Full 3D Electronic Moulding

7. automatic modification of the shape

8. Methodology  The angular correction of 166 plaster moulding scoliosis was compared with the correction of 117 electronic moulding scoliosis (random).  Both mouldings were made by the same physician.  The electronic moulding has been produced using the full 3D system ORTEN.  The curves have been grouped into thoracic (n=127), thoracolumbar(n=65) and lumbar(n=206).

9. Init Plaster cast Lumbar brace

10. Results The average initial angle is: 28,19 (+-9,21) for thoracic, 28,11 (+-9,34) for thoraco-lumbar and 25,86 (+-7,04) for lumbar curves. The angular reducibility is 54 % in braces for the thoracic curvatures, 69 % for the thoraco- lumbar curvatures and of 73 % for the lumbar curvatures, which corresponds to the usual results of the Lyon management.

11. Anatomo-radiological classification

12. In Brace angular reducibility 54 % 69 % 73 %

13. Comparative results N= 166 – Traditional mouldingN = 117 cad-cam moulding Thoracic before treatment28,70 (+-8.85 )27,75 (+-9.60 ) Thoracic in plaster cast13,33 (+-8.15 )15,72 (+-8.83 ) Thoracic in brace14,43 (+-8.47 )13,19 (+-7.88 ) Thor-lumbar before treatment28,21 (+-9.38 )28,61 (+-9.12 ) Thor-lumbar in plaster cast8,82 (+-8.94 )9,35 (+-8.43 ) Thor-lumbar in brace11,37 (+-9.82 )8,88 (+-8.37 ) Lumbar before treatment26,31 (+-6.86)25,31 (+-7.10 ) Lumbar in plaster cast8,02 (+-6.69 )8,23 (+- 7.70) Lumbar in brace8,78 (+-7.70 )6,85 (+7.34- )

14. Electronic versus Plaster Moulding 3.63° 3.02° 2.14° 5.44° 4.75° 3.89° But nonsignificant

15. Conclusion  Such results are in favour of the electronic moulding which remains however delicate and require:  a precise position of the patient during the surface topography and  well trained orthotic technicians.