Open Access Database of Standing Full Body Radiographs in Asymptomatic Volunteers

Study Overview
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Brief Summary
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A study of the skeletal structure and how the structure changes over time. The aim of the study is to evaluate the skeleton in 10 year increments to determine an understanding of the normal skeleton as a person ages. By using x-ray analysis, a new low dose x-ray system (EOS) can be used to evaluate the whole body to see changes in the bone structure over time. Subjects will be asked to undertake one x-ray analysis of their whole body skeletal structure. There will be 25 male and 25 female subjects per decade. The averaging of the measured skeletal parameters will provide information on changes over time generating a standardized expectation of general changes in skeletal structure as participants age.

Detailed Description
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Current techniques of advanced spinal surgery allow physicians to correct complex spinal deformity to nearly any alignment desired. The investigators ability to analyze spino-pelvic alignment has evolved concurrently; however, the investigators goals in deformity correction are still not completely understood. With increasing ability to assess whole body alignment, the investigators must establish a baseline for the normal population inclusive of age related changes. the investigators hypothesis is that global body alignment will vary based on sex and progressively vary with age. The goal of this study is to create an open access database of normal volunteer full body radiographic images obtained using the new EOS biplanar x-ray imaging system. The system provides a radiographic view of the weight-bearing skeleton equivalent to plain radiography. The development of an open access database of full body images and global spine parameters will provide spine surgeons with normative data that can be used to guide clinical decision making and surgical planning. Furthermore, the database can be used by researchers to obtain control measurements for comparison in studies of various spine, and potentially non-spine, pathologies. Specific Aims To create an open access database of radiographic full body images in the sagittal and coronal planes of subjectswithout spine deformities or acute or severe chronic disease, across a range of age groups from 20 to 80 year old males and females. To document age related changes that occur in radiographic parameters in the spine and pelvis by including subjects across a wide range of ages.

Official Title
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Open Access Database of Standing Full Body Radiographs in Asymptomatic Volunteers

Conditions
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Intervertebral Disc Degeneration, Osteoarthritis, Spine

Intervention / Treatment
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* Radiation: EOS imaging


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Males and females age 21-85 without a history of spine surgery. Exclusion Criteria: History of spine or neural axis surgery History of cancer with or without metastatic disease Connective tissue, rheumatologic (or other inflammatory arthropathies), or neurologic disorders History of knee replacement surgery, as these may have contractures causing unexpected changes in alignment Severe osteoarthritis of the hips/knees/ankles Spondylitis Compression fractures or other trauma of the spinal column Previous trauma/fractures of the pelvis whether or not surgery was required Previous trauma or fractures of the lower extremities requiring surgery Pregnant women BMI >37 Oswestry Disability Index score >25

Ages Eligible for Study
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Minimum Age: 21 Years
Maximum Age: 85 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: asymptomatic EOS Imaging<br>patients that qualify for study and EOS imaging to analyze spino-pelvic parameters | Radiation: EOS imaging<br>* The EOS imaging system will be utilized to obtain full-body radiographs in frontal and sagittal projections obtained in the upright standing position. Measurements will include a coronal plumb-line, sagittal vertebral axis (SVA), external auditory meatus plumb-line, cervical lordosis, thoracic kyphosis, lumbar lordosis, hip flexion/extension, knee flexion/extension, ankle flexion/extension, T1 tilt, T1 spino-pelvic instance, acetabular index, pelvic tilt (PT), pelvic incidence (PI), and sacral slope (SS).<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Coronal plumb-line |  | Through 1 EOS scan, 20 minutes | 
| Sagittal vertebral axis (SVA) |  | Through 1 EOS scan, 20 minutes | 
| External auditory meatus plumb-line |  | Through 1 EOS scan, 20 minutes | 
| Cervical lordosis |  | Through 1 EOS scan, 20 minutes | 
| Thoracic kyphosis |  | Through 1 EOS scan, 20 minutes | 
| Lumbar lordosis |  | Through 1 EOS scan, 20 minutes | 
| Hip flexion/extension |  | Through 1 EOS scan, 20 minutes | 
| Knee flexion/extension |  | Through 1 EOS scan, 20 minutes | 
| Ankle flexion/extension |  | Through 1 EOS scan, 20 minutes | 
| T1 tilt |  | Through 1 EOS scan, 20 minutes | 
| T1 spino-pelvic instance |  | Through 1 EOS scan, 20 minutes | 
| Acetabular index |  | Through 1 EOS scan, 20 minutes | 
| Pelvic tilt (PT) |  | Through 1 EOS scan, 20 minutes | 
| Pelvic incidence (PI) |  | Through 1 EOS scan, 20 minutes | 
| Sacral slope (SS) |  | Through 1 EOS scan, 20 minutes |