Sitting position should be changed at least every 15 minutes. This can be accomplished by standing, by lifting the body up while pushing down on armrests, or by just leaning and weight shifting. A variety of wheelchair cushions are available to minimize sitting pressure. Redness that does not blanch when finger pressure is applied may signal the beginning of a pressure ulcer. Good nutrition, vitamin C, and avoidance of moisture all contribute to healthy skin.
Pressure ulcers are much more easy to prevent than to heal.
When the spinal cord is injured, muscle groups below the level of injury may become spastic. This manifests as stiffness and resistance to movement. They may also become hyper-reflexic and jerk when touched or hit. The cause of this is not fully understood. The management of spasticity must always be based on the person's function.