Fig. 48

This figure shows the main difference in designing B and C types. In B type, the pelvis region is first translated around 8 cm, taking off plaster from the pelvis region at the convex thoracic side. This is not necessary in C type. Later, the pads are designed. In both types, pelvic pad is very similar, if perhaps it works lightly more caudal, just supra trochanteric, in C type. This pad braces the whole hemi-pelvis on the convex thoracic side, as it is extended to dorsal. On the concave thoracic side, B type presents a real lumbar pad reaching its maximum pressure at the apical level of the lumbar curve and approaching this level coming inclined from caudal to cranial and from lateral to medial. This pad works as a counter-stop point at the apical level against the pelvis a low lumbar region translation. The room caudal to the apex is necessary allowing translation. In C type, pelvis cannot be translated because it is a coupled lumbar region, so correction can be only achieved by keeping the pelvis stable and pushing the lumbar curve from caudal to cranial. The lumbar support goes practically horizontal from lateral to medial and reached the maximum pressure in the lower lumbar hemi-convexity