Develop reliable methods for functional assessment, for trunk strength, of Adult Spinal Deformity (ASD) patients and create a first clinical and normative database
1. Compare functionality of ASD and control subjects 2. Relate functionality of ASD patients to their pathology, in terms of spinal deformity and muscle condition
Adult (>18 years old) subjects suffering from a adult spinal deformity with sagittal or coronal plane misalignment diagnosed on EOS imaging.
Ability to walk at least 50 meters distance independently without a walking aid.
No documented neurological disease or vestibular lesion affecting balance nor a current history of musculoskeletal disorders of the lower extremities affecting motor performance.
Adults (> 18 year old)
Age < 18 years old and > 79 years old
Absence of adult spinal deformity
Non-ability to walk at least 50 meters distance independently, with or without a walking aid.
Missing patient informed consent
Parallel
Trunk strength measurement
Diagnostic testA trunk strength protocol in sitting position, using a hand-held dynamometer is developed.
EOS stereoradiographic full body exam
Diagnostic testEvery subject included in the study will undergo a stereoradiographic full body EOS exam completed with Gravity Line (GL) location, recorded by a force plate on the floor
Trunk muscle strength
Trunk muscle strength is measured according to a trunk strength hand-held dynamometer protocol and repeated within two weeks after the first measurement to assess both interrater and test-retest reliability.
Static 2D radiographic evaluation of spinopelvic parameters
Spinopelvic parameters are obtained on biplanar radiographic images. These will be related to trunk muscle strength.
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