1. Correction of Sagittal Plane Spinal Deformities with Unit Rod Instrumentation in Children with Cerebral Palsy by Kirk W. Dabney, Freeman Miller, Glenn E. Lipton, Eric J. Letonoff, and H. Catherine McCarthy JBJS Essent Surg Tech Volume os-86(1 suppl 2):156-168 September 1, 2004 ©2004 by The Journal of Bone and Joint Surgery, Inc.

2. A patient with hyperlordosis is lying on a radiolucent spine frame with the legs hanging as low as possible to decrease anterior pelvic tilt and passively correct as much of the hyperlordosis as possible. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

3. The drill-guide is hooked into the sciatic notch. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

4. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

5. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

6. A double Luque wire is passed under the lamina from inferior to superior. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

7. The rod is measured by placing it upside down with the top of the rod at T1 and the corner of the rod at the drill-hole into the pelvis. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

8. The pelvic limbs of the unit rod are crossed to insert them into the drill-holes in the pelvis. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

9. The spine shortens (A) as hyperkyphosis (top) is corrected to normal (middle), and it lengthens (B) as hyperlordosis (bottom) is corrected to normal (middle). Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

10. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

11. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

12. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

13. In hyperlordosis, the direction of the drill should be in a posterior direction (drilling up from the table with the patient in the prone position). Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

14. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

15. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

16. Postoperative posteroanterior radiograph showing the left end--to-end connector at approximately the L1 level and two cross-links to strengthen the construct. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

17. A diagram showing the rod being pushed down manually to each vertebra with a rod pusher (arrow) prior to tightening of the wires. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.

18. A: The wires are passed and twisted in a clockwise direction. Kirk W. Dabney et al. J Bone Joint Surg Am 2004;os-86:156- 168 ©2004 by The Journal of Bone and Joint Surgery, Inc.