Evidence map›Paper›PMID 39674955›Full record

ArticleSpine deformity2025

LIV selection in 'tweener' patients treated with magnetically controlled growing rods vs. posterior spinal fusion.

Brandon Yoshida, Claudia Leonardi, Jacquelyn Valenzuela-Moss, Lindsay M Andras, Tyler A Tetreault, John B Emans, John T Smith, Joshua M Pahys, G Ying Li, Pediatric Spine Study Group and 1 more

Abstract readMulticenter StudyComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Spine deformity, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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2 · The registry

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4 · The record

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5 · Who and what money

Authors and funding

11 authors.

Brandon YoshidaKeck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Claudia LeonardiSchool of Public Health, LSU Health Sciences Center, New Orleans, LA, USA.
Jacquelyn Valenzuela-MossChildren's Hospital Los Angeles, Jackie and Gene Autry Orthopedic Center, Los Angeles, CA, USA.
Lindsay M AndrasChildren's Hospital Los Angeles, Jackie and Gene Autry Orthopedic Center, Los Angeles, CA, USA.
Tyler A TetreaultChildren's Hospital Los Angeles, Jackie and Gene Autry Orthopedic Center, Los Angeles, CA, USA.
John B EmansOrthopedics and Sports Medicine Department, Boston Children's Hospital, Boston, MA, USA.
John T SmithDepartment of Orthopaedics, The Orthopaedic Partners, Park City, UT, USA.
Joshua M PahysPediatric Orthopedics Department, Shriners Hospital for Children, Philadelphia, PA, USA.
G Ying LiDepartment of Orthopaedic Surgery, C.S. Mott Children's Hospital, Ann Arbor, MI, USA.
Pediatric Spine Study Group
Michael J HeffernanChildren's Hospital Los Angeles, Jackie and Gene Autry Orthopedic Center, Los Angeles, CA, USA. mheffernan@chla.usc.edu.ORCID http://orcid.org/0000-0002-0632-3367

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study was to compare the LIV selection in 'tweener' patients treated with MCGR or PSF.

methodsA multicenter pediatric spine database was queried for ambulatory patients ages 8-11 years treated by MCGR or PSF with at least 2-year follow-up. The relationship between the LIV and preoperative spinal height, curve magnitude, and implant type were assessed. The relationship between the touched vertebrae (TV), the last substantially touched vertebrae (LSTV), the stable vertebrae (SV), and the LIV were evaluated.

resultsOne hundred and fifty-nine patients met inclusion criteria. Preoperative curve magnitude was similar between groups (MCGR 68 ± 19.0° vs. PSF 66 ± 17.2°, p = 0.6). Preoperative curve magnitude was associated with LIV, as larger curves were associated with a more caudal LIV (p = 0.0004). Distribution of the LIV was more varied in PSF compared to MCGR. L3 was the LIV in 43% of MCGR patients compared to 27% of PSF patients. A thoracic LIV was more common in the PSF group (PSF 13% vs. MCGR 1.2%, p = 0.0038). The LIV was cephalad to the SV in 68% of PSF compared to 48% of MCGR patients (p = 0.02).

conclusionThe majority of LIV selection in 'tweener' patients was at L3 or below regardless of surgical strategy, likely driven by curve magnitude. However, 'tweener' patients treated with PSF had more cephalad LIV selections compared to patients treated with MCGR. Potential LIV differences should be considered when selecting MCGR vs. PSF in 'tweener' patients. LEVEL OF EVIDENCE: III.

Indexed as

Lumbar VertebraeScoliosisSpinal FusionThoracic VertebraeChildFemaleHumansMaleRetrospective StudiesTreatment OutcomeGrowth friendly instrumentationLIV selectionLowest instrumented vertebraePosterior spinal fusion‘Tweener’ patients

Identifiers

PMID39674955
PMCPMC12021725

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