Posterior Correction of Adolescent Idiopathic Scoliosis with High-Density Pedicle Screw-Only Constructs: 5 Years of Follow-Up
10.3349/ymj.2020.61.4.323
- Author:
Chang Ju HWANG
1
;
Jong Min BAIK
;
Jae Hwan CHO
;
So Jeong YOON
;
Dong Ho LEE
;
Choon Sung LEE
Author Information
1. Scoliosis Center, Asan Medical Center, Ulsan University College of Medicine, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
Adolescent idiopathic scoliosis;
pedicle screw;
high-density;
posterior-only surgery
- From:Yonsei Medical Journal
2020;61(4):323-330
- CountryRepublic of Korea
- Language:English
-
Abstract:
PURPOSE: This study aimed to analyze radiological outcomes in patients with adolescent idiopathic scoliosis (AIS) who underwent posterior correction with high-density pedicle screw-only constructs. We hypothesized that high-density pedicle screw-only constructs in AIS would provide a high correction rate and would facilitate the maintenance of the correction or obviate the loss thereof.MATERIALS AND METHODS: We retrospectively analyzed radiological outcomes over a minimum follow-up period of 5 years in patients with AIS who underwent posterior correction with high-density pedicle screw-only constructs. A total of 124 consecutive patients were included. Demographic data, including age, sex, operated fusion level, numbers of screw, Lenke curve type, Risser stage, and follow-up period were retrospectively collected from electronic medical records and radiological measurements including serial follow-up.RESULTS: The average number of pedicle screws was 1.96/vertebra. The average curve correction was 48.3% for the proximal thoracic (PT) curve, 83.1% for the main thoracic (MT) curve, and 80.2% for the thoracolumbar/lumbar (TL/L) curve at final follow-up. Use of high-density pedicle screw-only constructs helped achieve excellent correction rates, with no significant loss of correction at final follow-up.CONCLUSION: We obtained excellent correction rates of 48.3% for PT, 83.1% for MT, and 80.2% for TL/L curves using high-density pedicle screw-only constructs in AIS, with no significant loss of correction at final follow-up.
