Which device has a larger BOS than a single point cane?

Which device has a larger BOS than a single point cane?

• A. Quad cane
• B. Walker
• C. Axillary crutches
• D. Platform crutch

Answer: (A)

The main idea here is how a device’s base of support (BOS) affects stability. A single point cane only touches the ground at one point, giving a small, narrow base and less lateral stability. A quad cane, on the other hand, has four tips that contact the floor, forming a wider footprint. That larger base distributes the load across more points, making it easier to maintain balance during weight shifts and turns compared to a single-point cane. While devices with two contact points (like two-crutch setups or similar) can be more stable than a single-point cane, the quad cane provides a clearly larger base among the options listed, which is why it’s the best choice here.

The main idea here is how a device’s base of support (BOS) affects stability. A single point cane only touches the ground at one point, giving a small, narrow base and less lateral stability. A quad cane, on the other hand, has four tips that contact the floor, forming a wider footprint. That larger base distributes the load across more points, making it easier to maintain balance during weight shifts and turns compared to a single-point cane. While devices with two contact points (like two-crutch setups or similar) can be more stable than a single-point cane, the quad cane provides a clearly larger base among the options listed, which is why it’s the best choice here.