Pediatric Spine Foundation

Title: Pelvic Obliquity Correction in Distraction-Based Growth Friendly Implants

Authors: Schur M, Andras LM, Murgai R, Siddiqui AA, Gonsalves NR, Sponseller PD, Emans JB, Vitale MG, Skagg DL, GSSG, CSSG

Journal: Spine Deformity

Date: November 01, 2019

Excerpt: Better pelvic obliquity correction, combined with a low complication rate, provides strong evidence to support the use of screws as the first choice for pelvic fixation in growth-friendly constructs.

Keywords: Complications, distraction-based, growth friendly, early onset scoliosis, pelvic obliquity


 What is the purpose of this study?

In growth friendly surgery patients with early onset scoliosis, surgical devices can be connected to different places, such as the hip or directly on the spine. This study reviews the practice of putting the lower end of the device on the hip using a screw or a hook.


- In patients with uneven hips, placing screws directly into the hips made the hips more even and balanced than using hooks to secure the device.

- Patients that used screws developed more lordosis, or further back arching, than patients with hooks. This was seen right after surgery and at the most recent visit.

- Hook patients seemed to have more complications than those with screws.

Important Discussion Points

- Other factors, such as the rest of the device construct could have potentially affected the results, but there are not enough patients to tell.

- There are more factors that could also affect the results, like the progress of treatment. Hooks were historically used, and screws are used in the more recent patients.