2. There is level 3 evidence that adding lumbar support to the wheelchair of those with chronic SCI has a negligible effect on reducing seated buttock pressures at the ischial tuberosities.
Figure 8. Areas where bones are close to the surface (called “bony prominences”) and areas that are under the most pressure are at greatest risk for developing pressure ulcers. Source: Copyright © 2010 by University of Washington/MSKTC.