Lumbar surgery is the most common treatment for chronic disabling low back pain with degenerative disc disease. There are few elements to objectively evaluate the improvement of the motor control after surgery and the motor adaptation capacities of the patients. The impact of lumbar surgery on complexity in this painful context has never been studied. Theoretically, the restriction of mobility imposed by lumbar surgery should limit the subject's adaptive capacities (of one or more lumbar segments) and thus reduce complexity. Nevertheless, improvement in pain intensity levels could allow the patient to find better motor adaptation capacities, necessary for a positive evolution in the long-term. The aim of this study was to investigate the evolution of gait complexity in chronic low back pain patients pre- and post-surgery. If surgery improves the adaptability of walking through an antalgic benefit exceeding the induced stiffness, the complexity of walking should be superior after surgery. This is a proof-of-concept study in which the study investigators hypothesize that measuring complexity by fractal analysis during a walking task will show the increase in gait complexity induced by lumbar surgery at 3 and 6 months after surgery.
Study Type
OBSERVATIONAL
Enrollment
32
Treadmill walking task with study of fractal variability (complexity) for 10 minutes.
CHU Nîmes
Nîmes, France
RECRUITINGPolyclinique Grand Sud
Nîmes, France
NOT_YET_RECRUITINGGait complexity
fractal analysis of gait variability: value normally between 0.5 (degraded structure) to 1 (optimal structure)
Time frame: 10 days before surgery +/- 3 days
Gait complexity
fractal analysis of gait variability: value normally between 0.5 (degraded structure) to 1 (optimal structure)
Time frame: Month 3
Gait complexity
fractal analysis of gait variability: value normally between 0.5 (degraded structure) to 1 (optimal structure)
Time frame: Month 6
Patient reported pain
Visual analog scale (0-100)
Time frame: 10 days before surgery +/- 3 days
Patient reported pain
Visual analog scale (0-100)
Time frame: Month 3
Patient reported pain
Visual analog scale (0-100)
Time frame: Month 6
Apprehension of pain of movement
Tampa Scale of Kinesiophobia. Score ranging from 17-68. Higher scores denote greater level of kinesiophobia (a score \>40 is considered significant kinesiophobia)
Time frame: 10 days before surgery +/- 3 days
Apprehension of pain of movement
Tampa Scale of Kinesiophobia. Score ranging from 17-68. Higher scores denote greater level of kinesiophobia (a score \>40 is considered significant kinesiophobia)
Time frame: Month 3
Apprehension of pain of movement
Tampa Scale of Kinesiophobia. Score ranging from 17-68. Higher scores denote greater level of kinesiophobia (a score \>40 is considered significant kinesiophobia)
Time frame: Month 6
Patient reported quality of life
EuroQol-5 Dimension questionnaire: results generated as 5 digit number corresponding to different aspects of quality of life
Time frame: 10 days before surgery +/- 3 days
Patient reported quality of life
EuroQol-5 Dimension questionnaire: results generated as 5 digit number corresponding to different aspects of quality of life
Time frame: Month 3
Patient reported quality of life
EuroQol-5 Dimension questionnaire: results generated as 5 digit number corresponding to different aspects of quality of life
Time frame: Month 6
Correlation between type of surgery and gait variability
Classified as either arthrodesis or prosthesis
Time frame: 10 days before surgery +/- 3 days
Correlation between type of surgery and gait variability
Classified as either arthrodesis or prosthesis
Time frame: Month 3
Correlation between type of surgery and gait variability
Classified as either arthrodesis or prosthesis
Time frame: Month 6
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