Flexibility of the thoracic curve and three-dimensional thoracic kyphosis can predict pulmonary function in nonoperatively treated adult patients with adolescent idiopathic scoliosis

Ohashi, Masayuki; Watanabe, Kei; Hirano, Tôru; Hara, Kazuhiro; Katsumi, Keiichi; Shoji, Hirokazu; Mizouchi, Tatsuki; Endo, Naoto

doi:10.1016/j.jos.2019.06.015

Cited by 4 publications

(1 citation statement)

References 27 publications

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“…Our results consent to the study of Ling et al, 31 their study proved the lung ventilation and perfusion function deviation did not correlated with cobb angle, but the ventilation function strongly correlated to the perfusion function ( r =0.753) in patients with severe and rigid scoliosis. As a multifactorial procure, the relationship between cobb angle and PFTs values may be covered up by other factors, such as apex location, lungs’ blood perfusion and flexibility, 13 , 22 , 23 , 32 especially in patients with SRSD who experienced more complicated pulmonary deficits. 13 , 31 So we believe that cobb angle, as a 2-dimensional parameter which was used for the evaluation of the severity of spinal deformity, had limited values for the prediction of PF prognosis.…”

Section: Discussionmentioning

confidence: 99%

Is There a Correlation Between Cobb Angle and Pulmonary Function Tests at 2-year Follow-up in Patients With Severe Spinal Deformity Treated by Posterior Vertebral Column Resection?

Zhang

Song

Yang

et al. 2021

Clinical Spine Surgery: A Spine Publication

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Study design: A retrospective study. Objective: The aim was to evaluate the relationships of Cobb angle and pulmonary function tests (PFTs) changes in severe spinal deformity and underwent posterior vertebral column resection (PVCR). Summary of Background Data: No previous study focused on the correlation of deformity correction and PFTs changes in patients with cobb angle >90 degrees. Methods: PFTs values [forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), and percent-predicted values FVC%, FEV1%] were evaluated preoperative and at 2 years after PVCR. FVC% <80% were defined as restrictive ventilation dysfunction (RVD), the severity of RVD were divided into mild (FEV1% ≥70%), moderate (70% > FEV1% ≥50%) and severe (FEV1% <50%). The relationships among PFTs values improvements and all possible impact factors (mainly correction cobb angle) collected in this study were analyzed. PFTs data were compared among the 3 RVD subgroups (mild vs. moderate vs. severe) and between residual >30 versus <30 degrees. Results: A total of 53 cases (28 male/25 female, mean ages 18.9 Y) underwent PVCR in one center from 2004 to 2016 were enrolled cobb angle. When 2 years after PVCR, average PFTs values showed significant improvements. PFTs values changes showed no correlation with correction rate and correction angle. The only significant impact factor in this study for FVC, FVC%, FEV1 improvements was preoperative FVC% and the only impact factor for FEV1% improvement was preoperative FEV1%, the relationships were negative. In accordance with the regression analysis, PFTs values improvements among the 3 RVD subgroups from high to low was severe>moderate>mild. However, patients with residual cobb angle <30 degrees had less PFTs values improvements than patients with residual cobb angle >30 degrees. Conclusions: Two years after PVCR, PFTs values were significantly improved. There is no linear correlation between cobb angle change and PFTs values improvements. Lower preoperative FVC% and FEV1% indicate more PFTs values improvements at 2 years post-PVCR. Level of Evidence: Level III.

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Section: Discussionmentioning

confidence: 99%

Is There a Correlation Between Cobb Angle and Pulmonary Function Tests at 2-year Follow-up in Patients With Severe Spinal Deformity Treated by Posterior Vertebral Column Resection?

Zhang

Song

Yang

et al. 2021

Clinical Spine Surgery: A Spine Publication

View full text Add to dashboard Cite

show abstract

Impact of the flexibility of the spinal deformity on low back pain and disc degeneration in adult patients nonoperatively treated for adolescent idiopathic scoliosis with thoracolumbar or lumbar curves

et al. 2021

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The effect of brace treatment on pulmonary functions in adolescent idiopathic scoliosis: An 8-month follow-up study

Yurt

Yatar

Malkoç

et al. 2021

BMR

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BACKGROUND: The instant effect of a brace on pulmonary functions of patients with adolescent idiopathic scoliosis (AIS) is known. However, the permanent effects of its regular use are still unclear. OBJECTIVE: This study aimed to determine whether a brace in patients with AIS had a permanent effect on respiratory functions. METHODS: Fifteen patients with a mean age of 13.2 ± 1.6 years, and a major Cobb angle of 25.8∘± 7.7∘ participated in this study. Lung volumes and respiratory muscle strength were measured with and without thoracolumbosacral brace, at the end of first month and follow-up period after the patients started using the brace for 23 hours daily. RESULTS: When the brace was on, the forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), ratio of FEV1/FVC, peak expiratory flow, and forced expiratory flow between 25% and 75% of vital capacity values were found to be lower at both first month and follow-up. After the follow-up, the measurement results did not differ from the results of the first month. CONCLUSIONS: The brace had a momentary restrictive effect on patients with AIS. However, it did not cause a permanent change in pulmonary functions after the 8-month follow-up.

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Flexibility of the thoracic curve and three-dimensional thoracic kyphosis can predict pulmonary function in nonoperatively treated adult patients with adolescent idiopathic scoliosis

Cited by 4 publications

References 27 publications

Is There a Correlation Between Cobb Angle and Pulmonary Function Tests at 2-year Follow-up in Patients With Severe Spinal Deformity Treated by Posterior Vertebral Column Resection?

Is There a Correlation Between Cobb Angle and Pulmonary Function Tests at 2-year Follow-up in Patients With Severe Spinal Deformity Treated by Posterior Vertebral Column Resection?

Impact of the flexibility of the spinal deformity on low back pain and disc degeneration in adult patients nonoperatively treated for adolescent idiopathic scoliosis with thoracolumbar or lumbar curves

The effect of brace treatment on pulmonary functions in adolescent idiopathic scoliosis: An 8-month follow-up study

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