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J Spinal Disord Tech. 2013 Aug;26(6):E254-8. doi: 10.1097/BSD.0b013e318289be35.

The influence of preoperative brace treatment on the pulmonary function test in female adolescent idiopathic scoliosis.

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1
Department of Orthopedics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, PR China.

Abstract

STUDY DESIGN:

Retrospective study.

OBJECTIVES:

To analyze the influence of preoperative brace treatment on the pulmonary function tests (PFTs) in females with adolescent idiopathic scoliosis (AIS).

SUMMARY OF BACKGROUND:

Brace is a selection of conservative treatment for some patients with AIS. Some authors reported that wearing a brace could impair the PFTs, although there are no reports that analyze the related factors.

METHODS:

Preoperative PFTs were evaluated in 270 female patients with AIS. The patients were classified into 2 groups: group A, with preoperative brace treatment, 70 cases; and group B, without preoperative brace treatment, 200 cases. The differences of the PFTs between the 2 groups were compared.

RESULTS:

The predicted values of forced vital capacity (FVC) and forced expiratory volume in 1 s (FEV1) in group A and B were 3.26 L and 3.20 L, 2.78 L and 2.73 L, respectively, (both P>0.05). The actual values of FVC and FEV1 in group A and B were 2.61 L and 2.72 L, 2.37 L and 2.48 L, respectively, (both P>0.05). The percentage of actual value and predicted value of FVC(FVC%) and FEV1(FEV1%) in group A and B were 80.6% and 85.2%, 85.7% and 91.1%, respectively, and group A had significantly lower values when compared with those of group B (both P<0.05). This difference was significant in patients with a primary thoracic curve (166 cases) (P<0.05), whereas not in patients with a primary thoracolumbar/lumbar curve (104 cases) (P>0.05). In group A, there were significant correlations between the sagittal Cobb angle of the thoracic curve and the actual values of FVC and FEV1 and FVC% and FEV1% (both P<0.05).

CONCLUSIONS:

Preoperative brace treatment can reduce the FVC% and FEV1% in thoracic AIS. The sagittal Cobb angle of the thoracic curve may be the influential factors.

PMID:
23429322
DOI:
10.1097/BSD.0b013e318289be35
[Indexed for MEDLINE]
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