Ultrasonographic Evaluation of Abdominal Muscle Thickness Symmetry and Correlation With Pulmonary Function

Ultrasonographic Evaluation of Abdominal Muscle Thickness Symmetry and Correlation With Pulmonary Function Test in Adolescent Idiopathic Scoliosis

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04567914

Enrollment

Registered

2020-09-29

Start date

2019-04-15

Completion date

2021-04-01

Last updated

2024-01-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Adolescent Idiopathic Scoliosis, Muscle Physiology

Keywords

Abdominal muscle, Cobb angle, Imbalance, Spirometry, Ultrasonography

Brief summary

We aimed in this study: 1. To compare the ultrasonographic measurements of the abdominal muscles thickness symmetry in patients with adolescent idiopathic scoliosis (AIS) and adolescent healthy individuals 2. To investigate the effect of measured thickness and symmetry on pulmonary function test.

Detailed description

This cross-sectional,case-control clinical study included 40 patients diagnosed with AIS and 40 age and gender -matched healthy individuals. AIS group was evaluated for localization of curvature and degree of curvature. Ultrasonographic measurements and were performed of bilaterally abdominal muscle thickness in both groups. Spirometry evaluation was performed in both groups. Intragroup and intergroup data were compared.

Interventions

DIAGNOSTIC_TESTBilaterally abdominal muscle thickness with ultrasonography

AIS group was evaluated for localization of curvature and degree of curvature. Ultrasonographic measurements were performed of bilaterally abdominal muscle thickness in the supine and standing positions in both groups. Spirometry evaluation was performed in both groups

Study design

Observational model

CASE_CONTROL

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

10 Years to 18 Years

Healthy volunteers

Yes

Inclusion criteria

* Cobb angle over 10 degrees in radiological evaluation * Between the ages of 10-18 and diagnosed with AIS by a specialist physiatrist

Exclusion criteria

* History of previous spinal surgery * Patients using brace * Those with any diagnosis of scoliosis other than AIS * Those with a history of neuromuscular disease * Previous spinal surgery * Patients with neurological deficits on examination * Patients with acute or chronic lung pathology * Patients with abdominal surgery or injury * Double curve or multiple curve * Patients with concomitant chronic diseases * The child's legal guardian does not allow it to take the tests The control group: * 10-18 volunteer adolescents without any health problems, * In clinical evaluation: Healthy adolescents (without any asymmetric findings on three-way inspection, Adam's forward bend test and scoliometer) were included.

Design outcomes

Primary

Measure	Time frame	Description
Abdominal Muscle Thickness Symmetry	during evaluation, an average of 45 minutes	bilateral ultrasonographic millimetric measurement

Secondary

Measure	Time frame	Description
Spirometry	during evaluation, an average of 30 minutes	Forced expiratory volume 1 (FEV1), Forced vital capacity (FVC), FEV1/FVC, Peak expiratory flow (PEF)
Cobb angle	during evaluation, an average of 30 minutes	Measurements were made on orthoroentgenogram, Grouped as Cobb angle \<20 and Cobb angle ≥20

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026