Moderate disability has negative effect on spatiotemporal parameters in patients with chronic low back pain

Area of Science:

• Biomechanics
• Clinical Gait Analysis
• Pain Management

Background:

• Chronic low back pain (CLBP) significantly alters gait spatiotemporal characteristics compared to healthy individuals.
• CLBP is a heterogeneous condition with varying levels of functional disability.
• Understanding gait differences across disability levels is crucial for targeted interventions.

Purpose of the Study:

• To investigate whether varying disability levels in CLBP patients impact their gait spatiotemporal characteristics.
• To compare gait parameters between CLBP subgroups (moderate and severe disability) and healthy controls.

Main Methods:

• Sixty-six CLBP patients and 32 healthy controls (ages 25-65) were analyzed.
• Exclusion criteria included neurological, orthopedic, cardiovascular, and metastatic histories.
• Gait spatiotemporal characteristics were measured using an Optogait system at preferred walking speed, with disability assessed by the Oswestry Disability Index (ODI).

Main Results:

• Step length, stride length, and preferred walking speed significantly differed between healthy controls and CLBP patients (p < 0.05).
• Post-hoc analysis revealed that moderate CLBP exhibited the most significant gait deviations compared to healthy controls (p < 0.05).
• Contrary to expectations, severe CLBP did not show a greater difference in spatiotemporal characteristics compared to moderate CLBP or healthy controls.

Conclusions:

• CLBP subgroups demonstrate distinct compensatory mechanisms in gait.
• The relationship between disability level and gait alteration in CLBP is complex and not linear.
• Patients with moderate and severe disability may employ different strategies to normalize their gait patterns.