Mid-long-term outcome and degeneration of the remaining unfused lumbar intervertebral disc in adolescent idiopathic scoliosis patients who had posterior spinal fusion surgery

Chiu CK 1 , Tan CS 1 , Chung WH 1 , Mohamad SM 1 , Kwan MK 1 , Chan CYW 2

Affiliations 

  • 1 Department of Orthopaedic Surgery, National Orthopaedic Centre of Excellence for Research and Learning (NOCERAL) , Faculty of Medicine, University of Malaya , 50603, Kuala Lumpur, Malaysia
  • 2 Department of Orthopaedic Surgery, National Orthopaedic Centre of Excellence for Research and Learning (NOCERAL) , Faculty of Medicine, University of Malaya , 50603, Kuala Lumpur, Malaysia. chrnat01@yahoo.com
Eur Spine J, 2021 07;30(7):1978-1987.
PMID: 34023966 DOI: 10.1007/s00586-021-06874-5

Abstract

PURPOSE: To investigate mid-long-term effects of the lowest instrumented vertebra (LIV) selection on adolescent idiopathic scoliosis (AIS) patients who had posterior spinal fusion (PSF) surgery.

METHODS: Forty-eight patients were recruited. Inclusion criteria were AIS patients who have had PSF surgery more than 10 years ago. Patients were divided into G1: LIV L3 or higher and G2: LIV L4 or lower. MRI evaluation was classified using Pfirrmann grades. Pfirrmann scores were average of Pfirrmann grades for all unfused discs below LIV. SRS-22r, SF-36, Oswestry Disability Index (ODI) and Modified Cincinnati Sports Activity Scale (MCSAS) were used.

RESULTS: There were 19 patients in G1 and 29 patients in G2. Demographic parameters showed no significant differences. We found no significant differences in Pfirrmann grades or scores between G1 and G2. There was significant correlation between age and mean Pfirrmann scores (r = 0.546, p 

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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