Your yoga practice shouldn't encourage your scoliotic patterns.

In elementary school I remember doing the Adam's Forward Bend Test in the nurse's office to detect scoliosis, and my form was marked as having mild scoliosis. This forward flexion shows the maximum vertebral rotation in order to see asymmetries in the trunk more clearly, such as rib rotation. If this forward bend brings out one's scoliotic patterns, is this a desirable exercise? *Don’t do this test if in pain or with hardware in your back.*

Uttanasana (forward bending pose pictured on the right) is a very common yoga pose that you'll find in most yoga classes. Depending upon the style of the class, this forward fold could easily be done a dozen times or more.

When practicing yoga with scoliosis &/or spinal fusion there are certain poses that aren't beneficial, but may be practiced differently based on your spine. Instead of falling into your scoliotic patterns, practice in a way to encourage spinal lengthening and opening in the torso.