Dynamic seating allows specific seating components to move in response to forces generated by the wheelchair user. Instead of the full force being directed against an unyielding surface, dynamic components absorb and diffuse some of that force. This may help reduce sustained or repeated forces that could otherwise contribute to client injury.

A static seating system does not move in response to client-generated forces. For individuals with high muscle tone, strong extension, dystonia, rocking, or other large movements, repeated or sustained contact with static surfaces may place significant force on the body. Dynamic seating may provide movement that helps reduce these forces for appropriate clients.

Repeated or significant force against a head support can place substantial stress on the head and cervical region. Clients with strong extension or other forceful movements may repeatedly contact or push against the head support. Dynamic Head Support Hardware may be considered as part of a seating intervention designed to absorb and diffuse these forces.

When a wheelchair user extends forcefully while their feet or other body segments are supported or secured, some of that force may be transferred through joints such as the knees, hips, and ankles. Repeated high forces may place additional stress on these joints. Reducing and diffusing these forces is therefore an important consideration in wheelchair seating.

Dynamic seating may be considered when a client experiences sustained or repeated forces against the seating system, impacts wheelchair components with significant force, breaks seating or wheelchair hardware, or generates forces that may place the body at risk of injury. A qualified seating and wheeled mobility team should evaluate the individual to determine whether dynamic seating is clinically appropriate.