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

SARIYILMAZ K., Ozkunt O., Karademir G., GEMALMAZ H. C., Dikici F., Domanic U.

MEDICINE, vol.97, no.2, 2018 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 97 Issue: 2
  • Publication Date: 2018
  • Doi Number: 10.1097/md.0000000000009581
  • Journal Name: MEDICINE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: adolescent idiopathic scoliosis, early follow-up, last follow-up, Lenke type 5, pedicle screw density, POSTERIOR SPINAL-FUSION, HYBRID INSTRUMENTATION, CURVE-CORRECTION, ANCHOR DENSITY, FIXATION, SURGERY, COMPLICATIONS, PLACEMENT, ACCURACY, COST
  • Acibadem Mehmet Ali Aydinlar University Affiliated: Yes

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.