The relationship between sitting stability and functional performance in patients with paraplegia

Area of Science:

• Rehabilitation Medicine
• Neurology
• Biomechanics

Background:

• Sitting stability is crucial for functional independence in individuals with spinal cord injury (SCI).
• Understanding factors influencing sitting stability is essential for effective rehabilitation strategies.

Purpose of the Study:

• To compare sitting stability between high and low thoracic SCI.
• To identify predictors of sitting stability.
• To examine the relationship between sitting stability and functional performance.

Main Methods:

• A cross-sectional study involving 30 adults with complete chronic thoracic SCI.
• Static sitting stability assessed via postural sway; dynamic stability measured by maximal weight-shift.
• Predictive variables included age, body weight, trunk length, trunk strength, injury level, and spasticity.

Main Results:

• Individuals with low thoracic SCI exhibited significantly better dynamic sitting stability than those with high thoracic SCI.
• Injury level and trunk length were significant predictors of dynamic sitting stability, accounting for 43.5% of the variance.
• Upper-body dressing and undressing completion time correlated with both static and dynamic sitting stability.

Conclusions:

• Dynamic sitting stability is superior in individuals with low thoracic SCI compared to high thoracic SCI.
• Injury level and trunk length are key determinants of dynamic sitting stability, challenging the role of trunk strength alone.
• Current measures may not precisely predict functional performance based on injury level and sitting stability.