Leg Length Discrepancy and Adolescent Idiopathic Scoliosis: Clinical and Radiological Characteristics

Completed

• Conditions: Scoliosis; Pelvic Obliquity; Leg Length Inequality
• Interventions: Diagnostic Test: Leg Length Discrepancy Scoliometer Test

• Registration Number: NCT04713397
• Lead Sponsor: Hürriyet Yılmaz

Brief Summary

The aim of this retrospective study is to present clinical and radiological features and their relationships for differentiating functional scoliosis due to LLD and LLD concurrent with AIS.

Detailed Description

This study was conducted as a single-center retrospective comparative study on 47 consecutive scoliosis patients detected LLD, aged 10-18 years, between 2018 and 2020. The scoliosis patients with a diagnosis of structural LLD were divided into two groups according to whether there was a concurrent AIS diagnosis or not. Demographic data were recorded. Limb length was clinically measured by direct, indirect evaluation method and new LLD-Scoliometer Test. Cobb degree, axial rotation, internal/external pelvic obliquity and LLD were obtained from posteroanterior spine radiographs measured by two blinded orthopaedic spine surgeons.

Study Timeline

• Study Start: 2019-01-06
• Primary Completion: 2020-12-01
• Status Verified: 2021-01
• Study First Submitted: 2021-01-14
• Study First Submitted QC: 2021-01-14
• Study First Posted: 2021-01-19
• Study Completion: 2021-01-30
• Last Update Submitted: 2021-05-21
• Last Update Posted: 2021-05-24

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 47

Inclusion Criteria

• Between December 2018-2020
• Scoliotic patients, who detected LLD
• Ages 10 to 18 years
• Patients who have two or more clinical records at least 6 months apart
• Who accepted to participate in the study.

Exclusion Criteria

• Neurological disease
• A history of spinal surgery/tumors
• The diagnosis of AIS without LLD or trauma

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
LLD concurrent with AIS	Leg Length Discrepancy Scoliometer Test	Patients who have structural LLD concurrent with AIS
LLD group	Leg Length Discrepancy Scoliometer Test	Patients who have functional scoliosis due to structural LLD

Primary Outcome Measures

Name	Time	Method
Full spine PA radiography	baseline	Posteroanterior whole spine digital X-Ray images were obtained with the patient barefoot, both heels on the floor, and both knees extended in an upright standing position. The digital radiography detector was 350x430 millimeters in size and clearly showed the positions of the femoral heads, the iliac crests, and whole spine. The distance between the X-ray tube and the detector was two meters. All radiographic data such as Cobb degree, axial rotation by Perdriolle and pelvic obliquity were measured by two blinded orthopaedic spine surgeons using Surgimap ® Spine (Nemaris ™ Inc, New York, NY) a validated software
direct evaluation- tape measure	baseline	Limb length was clinically with a tape measure while the patient was in a supine position. For the direct evaluation method, measurements were taken from the anterior superior iliac spine to the medial malleolus.
indirect evaluation- wooden blocks	baseline	indirect evaluation method, wooden blocks of known height were used to evaluate the amount of LLD in standing position.

Trial Locations

Locations (1)

Formed Healthcare Scoliosis Treatment and Brace Center; 🇹🇷 Istanbul, Sisli, Turkey