A 23 year old female presented with Progressive Idiopathic Scoliosis with extreme pain. She would require a posterior spinal fusion from T4 to L2.
23 year old female with Progressive Adult Idiopathic Scoliosis, double thoracic curvature
23 year old female, patient was a ballerina at one time.
Upper thoracic and thoracolumbar curve with a lumbosacral transitional vertebra.
Thoracic curve 31°.
Thoracolumbar curve progressed from 38° to 43°.
Compensatory curve 24°.
Patient also has spina bifida occulta distally in the lumbar spine.
Therefore, we will get a CT scan of her lower lumbar spine to rule out the possibility of her having a pars fracture at the transitional vertebra, which is distal.
The patient’s curvature progressed 5° over a six month period. She has a significant thoracolumbar curve of 43°, with sharp angular apical segment at T11-T12. The patient has unremitting low back pain, discomfort, imbalance in the frontal and sagittal plane, and wishes surgical stabilization.
The patient has a 31° upper thoracic curve, a 43° thoracolumbar curve, and a compensatory 24° curve. Her sagittal balance is negative, and she has significant hyperlumbar lordosis. This is not the issue. Due to the hyperlumbar lordosis, the patient’s Hyperlumbar head is not balanced over her body lordosis.
On side bending to the right, herL thoracolumbar curve is significantly R flexible. She has a 6th lumbar vertebra with L5-S1, which is not well seated in the lumbar spine, and it is also noted on left side bending that the patient has significant flexibility of her lumbar curve with straightening of 2 to the left of the mid plum.
Indications for Surgery:
1. Type III CN progressive 43° thoracolumbar Adult Idiopathic Scoliosis.
2. Progressive increasing low back pain.
3. Failed conservative therapy.
4. Significant rotation, with cosmetic deformity due to rib hump.
5. Spina bifida occulta and possible anatomic anomaly.
The strategy would be from T4 down to L2. The T4 level is because of the depression of the right shoulder and the structural nature of the proximal curve, and the L2 vertebra is because on side bending, the patient horizontalized L2 over the mid sacrum and L3 is neutrally rotated.
Segmental spinal instrumentation using 1/4-inch 5.5 stainless steel rod-screw construct from T4-L2. This would be a 10-level instrumented fusion.
Posterior spinal fusion, T4-L2, using locally harvested autogenous bone and RH BMP.
Apical spinal osteotomy, Smith-Peterson radical osteotomy, T9-T10,T10-T11, T11-T12, T12-L1.
Intralaminar decompression for lateral recess stenosis, T12-L1, L1-L2 bilaterally.
Intraoperative SSEP motor evoked potential analysis.
Moderately flexible thoracolumbar curve. After the osteotomy, the curve was highly reducible. There was significant residual rotation at the distal L2. The patient is balanced in both the frontal and sagittal planes.
The patient’s curve was corrected from 43° to 14°. She is balanced in the frontal plane, and her rib hump was reduced, and her shoulders are now even.
The patient’s hyperlumbar lordosis has been corrected, and her sagittal alignment has been restored. Her head is now directly over her body.