What assistive device can help a person with a C1-C4 injury achieve some independence in mobility?

• A. Mouth-stick or blow-stick controlling the chair
• B. Standard joystick
• C. Voice-activated control only
• D. Sip-and-puff system only

Answer: (A)

When a person has a high cervical injury (C1–C4), hand and arm function is severely limited or absent, so mobility depends on a control method that uses whatever is still under voluntary control—often the mouth or facial muscles. A mouth-stick or blow-stick provides a direct, precise way to operate the wheelchair’s controls using the mouth, enabling steering and command input without requiring hand use. This setup can be tailored to the individual’s mouth movements and fitted to the chair, offering a practical path to independent movement in everyday environments.

A standard joystick typically requires hand or arm control, which many with C1–C4 injuries cannot provide. Voice-activated control depends on clear speech and reliable recognition, which isn’t always feasible due to speech impairment or environmental factors. A sip-and-puff system relies on breath patterns and can be slower or less intuitive for some users, and it may not meet independence goals as readily as a dependable mouth-control method.