Do Heavier Patients With Adolescent Idiopathic Scoliosis Have More Preserved Thoracic Kyphosis and Pulmonary Function?

Document Type

Article

Publication Date

11-2018

Identifier

DOI: 10.1016/j.jspd.2018.05.007

Abstract

Study design: Retrospective.

Objectives: We aimed to determine if heavier patients with adolescent idiopathic scoliosis (AIS) had more preserved thoracic kyphosis (TK), and as a result, more preserved pulmonary function.

Summary of background data: Some believe that childhood weight is predictive of adult sagittal plane parameters, with heavier children having greater TK as adults. Generally, thoracic scoliosis is coupled with loss of TK, which is associated with worsening pulmonary function.

Methods: A total of 142 patients with AIS and a structural main thoracic curve were analyzed. We excluded patients with structural proximal thoracic curves (Lenke 2 and 4). Standing preoperative radiographs, pulmonary function tests, and preoperative body mass indices (BMIs) were reviewed. The main thoracic Cobb angle, T2-T12 TK, percentage predicted forced vital capacity (FVC) and BMI were recorded. Spearman correlation was determined. Linear regression analysis used FVC as the primary outcome and BMI, TK, and Cobb angle as the independent variables. BMI categories were overweight/obese (BMI ≥25) and normal (BMI

Results: Demonstrated correlations included BMI and FVC (0.37, p ≤.01), FVC and TK (0.26, p

Conclusions: Heavier AIS patients have greater values of TK and percentage predicted FVC.

Level of evidence: Level III.

Journal Title

Spine Deform

Volume

6

Issue

6

First Page

704

Last Page

706

MeSH Keywords

Adolescent; Body Mass Index; Humans; Lung; Retrospective Studies; Scoliosis; Vital Capacity

Keywords

AIS; Adolescent Idiopathic Scoliosis; Obesity; Pulmonary function; Scoliosis

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