In general, if a client has moderate to significant hip extension, is seeking movement, and/or has a history of equipment breakage, a Dynamic Back may be appropriate. However, trialing a Dynamic Back can be challenging, as the frame may have to be modified to trial this equipment. How do you determine if this intervention is appropriate without actually trying it?
In this video, you will see that it is possible to sit behind the client on a mat table. If the client extends, allow this posterior movement and then gently guide the client back to an upright posture. This simulates the function of a Dynamic Back which allows movement, diffusing and absorbing force, and then facilitates a return to an upright and neutral posture.
By allowing this controlled movement, extensor forces and shear may be reduced, sitting tolerance increased, and an appropriate posture maintained.
Learn more about Dynamic Seating: http://www.seatingdynamics.com