Pelvic Area Extension Measurements for Four Types of Lumbopelvic Balance Using Three Different Methods

Comparison and Reproducibility of Pelvic Area Extension Measurements for Four Types of Lumbopelvic Balance Using Three Different Methods: Clinical Observation Versus Photography Versus the EOS Imaging System

The main objective of this study is to describe for the first time the expansion reserve of the pelvic area (measurements using the EOS system) for each of the four morphotypes (Roussouly classification) commonly found in a population of healthy volunteers.

Secondary objectives:

A. The intra-judge reproducibility and the interrater reliability for the different tools used to measure hip extension will be evaluated. Intra-judge reproducibility (photography) and interrater reliability (goniometry and photography) for the different tools used for measuring hip extension will be evaluated.

B. The concordance between EOS measurements and measurements acquired via goniometry and photography will be evaluated.

C. Describe certain radiographic measurements via the EOS system for the four morphotypes

Inclusion Criteria:

• The healthy volunteer must have given his/her informed and signed consent
• The healthy volunteer must be insured or beneficiary of a health insurance plan

Exclusion Criteria:

• The healthy volunteer is participating in another study
• The healthy volunteer is in an exclusion period determined by a previous study
• The healthy volunteer is under judicial protection, under tutorship or curatorship
• The healthy volunteer refuses to sign the consent
• It is impossible to correctly inform the healthy volunteer
• The healthy volunteer is pregnant, parturient, or breastfeeding
• The healthy volunteers had a history of chronic pain or surgery at the hip, the thoracolumbar spine or the sacroiliac area
• The healthy volunteer has a hip, knee or ankle abnormality