Does pedicle screw density matter in Lenke type 5 adolescent idiopathic scoliosis?

Medicine (Baltimore). 2018 Jan;97(2):e9581. doi: 10.1097/MD.0000000000009581.

Abstract

The aim of this study is to compare the effects of high versus low implant density on correction in Lenke type 5 adolescent idiopathic scoliosis (AIS) patients. A retrospective study of 59 Lenke type 5 AIS patients treated at a single institution were divided into to 2 groups according to implant density. Implant density, preoperative, early postoperative, and last follow-up thoracolumbar/lumbar (TL/L) curves were measured. Thirty-one constructs were high and 28 constructs were low density. The groups were similar in terms of age, sex, Cobb angle, and follow-up time. Mean implant density in low density group and high density group was 75.4% and 96.6%, respectively. High versus low-density comparison showed that there is no significant difference with regard to curve correction in early postoperative and last follow-up periods. The results show that pedicle screw density being low or high, does not affect curve correction rates in the short and long term in our patients.

MeSH terms

  • Adolescent
  • Female
  • Follow-Up Studies
  • Humans
  • Lumbar Vertebrae / diagnostic imaging
  • Lumbar Vertebrae / surgery
  • Male
  • Pedicle Screws*
  • Retrospective Studies
  • Scoliosis / diagnostic imaging
  • Scoliosis / surgery*
  • Thoracic Vertebrae / diagnostic imaging
  • Thoracic Vertebrae / surgery
  • Treatment Outcome