Scoliosis Research Society (SRS)
An International Organization Dedicated to the Education, Research and Treatment of Spinal Deformity
Our Mission is to Foster Optimal Care for All Patients with Spinal Deformities
|Compensated vs. Decompensated Imbalance
A) Compensated imbalance - A woman with traumatic lumbar kyphosis that compensates by extending her thoracic spine. Her weight-bearing (C7 plumb) line passes through S1.
B) Decompensated fixed sagittal imbalance – the C7 plumb line is well anterior to S1.
|Types of Fixed Sagittal Imbalance (FSI):
FSI can be caused by a local problem involving a few vertebra, a global problem involving many vertebra, or a mix of the two.