The Duration of the correction loss after removing cheneau brace in patients with adolescent idiopathic scoliosis

Katarzyna Zaborowska-Sapeta; Tomasz Giżewski; Anna Binkiewicz-Glińska; Anna M Kamelska-Sadowska; Ireneusz M Kowalski

doi:10.1016/j.aott.2018.10.001

The Duration of the correction loss after removing cheneau brace in patients with adolescent idiopathic scoliosis

Acta Orthop Traumatol Turc. 2019 Jan;53(1):61-67. doi: 10.1016/j.aott.2018.10.001. Epub 2018 Nov 17.

Authors

Katarzyna Zaborowska-Sapeta¹, Tomasz Giżewski², Anna Binkiewicz-Glińska³, Anna M Kamelska-Sadowska⁴, Ireneusz M Kowalski⁵

Affiliations

¹ Department of Rehabilitation, University of Warmia and Mazury, Olsztyn, Poland.
² Department of Material Science and Metallurgy, University of Cambridge, Cambridge, United Kingdom.
³ Department of Rehabilitation, Medical University of Gdansk, Gdańsk, Poland.
⁴ Clinic of Rehabilitation, Provincial Specialist Children's Hospital in Olsztyn, Olsztyn, Poland. Electronic address: kamelskamedical@gmail.com.
⁵ Department of Rehabilitation, University of Warmia and Mazury, Olsztyn, Poland; Clinic of Rehabilitation, Provincial Specialist Children's Hospital in Olsztyn, Olsztyn, Poland.

Abstract

Objective: The aim of the study was to evaluate the loss of truncal rotation over 54 hours after removing Chêneau brace.

Methods: The studied groups consisted of 39 girls aged 10-18 years old, diagnosed with adolescent idiopathic scoliosis (AIS) and treated with Chêneau brace (CAST) and 20 AIS girls aged 10-18 years old, not treated with bracing. Posterior-anterior radiographs were obtained from the clinical assessment of all subjects and were subsequently used to determine Cobb angles. The measurements of the angle of trunk rotation (ATR) were taken with the Scoliometer® and back-contour device during Adams forward bending test by the two evaluators. The changes in ATRs during 54 hours of observation were performed after the brace had been taken off (0, 2, 24, 30, 48 and 54 hours after debracing). This was described using V_ATR variable, defined as the change in the absolute Scoliometer® readings in the time intervals against the time interval Δt between the measurements. During back-contour assessment the differential factor (k_ra) has been used for the digital analysis. The changes in k_ra over 54 hours of observation were expressed as V_kra factor, defined as the difference in the absolute value of the amplitude differential factor (k_ra) in the time intervals against the time interval Δt between the measurements.

Results: The highest changes were observed in the thoracic as well as in lumbar spine in patients with Cobb angle ≥30°, axial rotation of the apical vertebrae within 5-15°, Risser sign 0-2. The biggest change in the trunk rotation after Chêneau brace had been taken off was noted within the first two hours of observation.

Conclusion: The patients should be advised to take the brace off for a minimum of two hours before the scheduled x-ray, to allow full relaxation of the trunk in order to obtain reliable radiological images of the deformation.

Level of evidence: Level III Therapeutic study.

Keywords: Adolescent idiopathic scoliosis; Chêneau brace; Spinal curvatures; Trunk rotation; X-ray.

MeSH terms

Adolescent
Braces*
Child
Device Removal / methods*
Female
Humans
Orthopedic Procedures* / adverse effects
Orthopedic Procedures* / instrumentation
Orthopedic Procedures* / methods
Outcome Assessment, Health Care
Radiography / methods
Rotation
Scoliosis / diagnostic imaging
Scoliosis / therapy
Thoracic Vertebrae / diagnostic imaging
Thoracic Vertebrae / pathology
Time Factors
Young Adult