Technical Brief

Thoracic Volumes Correlated with Pulmonary Function Tests in Adult Scoliosis Patients Following Different Treatments in Adolescence

[+] Author and Article Information
Po-Chih Lee

Earl E. Bakken Medical Devices Center and Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455

Arthur Erdman

Earl E. Bakken Medical Devices Center and Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN 55455

Charles Ledonio

Innovative Surgical Designs, Inc., Wayne, PA 19087

A. Noelle Larson

Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN 55905

David Polly

Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN 55454

1Corresponding author.

ASME doi:10.1115/1.4041634 History: Received March 12, 2018; Revised September 24, 2018


In clinical settings, restrictive lung disease is caused by different conditions where one of the triggers is tied to the spine deformity. In general, a pulmonary function test is used to evaluate and diagnose lung function, and physicians depend on the test results to identify the disease patterns of the patients. In the pulmonary function test, some parameters including total lung capacity, vital capacity, and residual volume can infer the lung volume and lung capacity. Other parameters, such as forced vital capacity and forced expiratory volume in the first second, are often employed to assess the pulmonary mechanics. Scoliosis is an abnormal lateral curvature of the spine which involves not only the curvature from side to side but also an axial rotation of the vertebrae. Restrictive lung disease often happens in scoliosis patients, especially with severe spine deformity. Spine deformity, if left untreated, may lead to progression of the spinal curve, respiratory complications, and the reduction of life expectancy due to the decrease in thoracic volume for lung expansion. However, the relationship between thoracic volume and pulmonary function is not broadly discussed, and anatomic abnormalities in spine deformity can affect thoracic volume. Previous literature has shown that the deformity of the thoracic rib cage will have detrimental effects on the respiratory function in adolescent idiopathic scoliosis patients. In this paper, we aim to correlate thoracic volume to the parameters in pulmonary function tests in adult scoliosis patients 25-35 years after receiving treatments during their adolescence.

Copyright (c) 2018 by ASME
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