Staff Low Back Injury Risk During Assisted Falls Virtual Reality Simulations.

Area of Science:

• Healthcare ergonomics
• Patient handling safety
• Occupational biomechanics

Background:

• Assisted falls, where staff reduce patient fall impact, are common.
• While patient injury risk may decrease, staff biomechanical risk is unevaluated.
• This study addresses the occupational hazard of low back injury for staff during assisted falls.

Purpose of the Study:

• To evaluate the low back injury risk for healthcare staff during assisted falls.
• To quantify biomechanical forces experienced by staff during simulated assisted falls.
• To assess the effectiveness of ergonomic techniques in mitigating injury risk.

Main Methods:

• Virtual reality (VR) simulations were developed for common assisted fall scenarios (toilet-to-wheelchair transfers, ambulation).
• Simulations included varying patient avatar weights (normal, underweight, overweight).
• Spinal compression forces at L5/S1 were calculated for participants using ergonomic techniques and compared to a 3,400 N safe limit.

Main Results:

• Six staff participants completed 90 VR simulations.
• Average spinal compression forces ranged from 7,132 N to 27,901 N.
• All trials exceeded the safe spinal compression limit, irrespective of patient weight or ergonomic methods.

Conclusions:

• Healthcare staff face a high risk of low back injury when assisting falls.
• Ergonomic techniques alone are insufficient to prevent exceeding safe spinal limits.
• Safer patient handling technologies and mobility screening are crucial to prevent staff injuries.