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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02996643
Other study ID # Pro000028133
Secondary ID
Status Completed
Phase Phase 0
First received December 9, 2016
Last updated December 14, 2016
Start date January 2012
Est. completion date March 2016

Study information

Verified date December 2016
Source University of Alberta
Contact n/a
Is FDA regulated No
Health authority Canada: Ethics Review Committee
Study type Interventional

Clinical Trial Summary

Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional deformity of the spine associated with vertebral rotation. Brace treatment is the most commonly used non-surgical treatment. To obtain the best possible outcome, the best in-brace correction within the patient's accepted tolerance must be provided. However, in the existing clinical practice, the immediate in-brace correction cannot be measured during the design and fitting of the brace because the correction is determined using a radiograph. This study is to evaluate the effect of applying ultrasound to measure the stimulated in-brace correction during brace casting.


Description:

Background: Adolescent Idiopathic Scoliosis (AIS) is a three-dimensional deformity of the spine associated with vertebral rotation. Brace treatment is the most commonly used non-surgical treatment. To obtain the best possible outcome, the best in-brace correction within the patient's accepted tolerance must be provided. However, in the existing clinical practice, the immediate in-brace correction cannot be measured during the design and fitting of the brace because the correction is determined using a radiograph.

Objectives: The objective of this study is to use ultrasound method to determine the optimum tolerable applied pressure level that can provide maximum in-brace correction.

Procedure:

Control Group: In the traditional method, each brace will be constructed using a plaster cast of the patient's trunk. Before the plaster cast hardens, the subject will lie on a casting board with multiple brace pads applied to correct the curve(s). The trim lines, pad placement, and areas of relief are then determined by the orthotist and guided by the curvature seen on the pre-brace PA spine radiograph.

Intervention Group: Before applying the plaster, subjects will lie on the custom designed frame. Two ultrasound scans will be performed and the average Cobb value will be used as the baseline. Multiple adjustable brace pads, each allowing for 6° of freedom and variable forces, will be applied to the patients' body according to orthotist suggestion. The apical brace pad that is used to control the major curve will be marked relative to the casting board as the reference location. The major pressure pad will be moved up 1 inch, then down 1 inch relative to the reference location. The 1 inch increment corresponds to the casting board, but finer adjustment is available. Two repeated ultrasound scans will be performed at each pad location (total 3 locations), and the average in-brace Cobb values will be estimated to determine optimum apical brace pad location. Next, pressure will be increased incrementally up to the tolerance level of the subject; this will be done by inflating the bladder at the apical brace pad. Another two ultrasound scans will then be performed to confirm that the maximum in-brace Cobb value is obtained. The orthotist will use this configuration to set the pad size and location once the plaster cast has been applied.


Recruitment information / eligibility

Status Completed
Enrollment 34
Est. completion date March 2016
Est. primary completion date March 2016
Accepts healthy volunteers No
Gender Both
Age group 10 Years to 18 Years
Eligibility Inclusion Criteria:

- AIS patients who are prescribed braces to treat their spinal deformity.

Exclusion Criteria:

- Any one does not want to participate.

Study Design

Allocation: Non-Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Health Services Research


Related Conditions & MeSH terms


Intervention

Device:
Ultrasound Assisted Group
A custom brace standing frame, a medical ultrasound system, a custom pressure measurement system, and in-house Ultrasound measurement software were used to assist brace casting for the intervention group.

Locations

Country Name City State
Canada Medicine and Dentistry Edmonton Alberta

Sponsors (1)

Lead Sponsor Collaborator
University of Alberta

Country where clinical trial is conducted

Canada, 

Outcome

Type Measure Description Time frame Safety issue
Primary In-brace Cobb angle In-brace radiographs will be obtained after patients use their braces for 6 weeks 6 weeks No
Secondary Number of adjustments Check if brace adjustment is required 6 weeks No
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