Which statement correctly describes a highboy tank?

• A. It is designed for immersion of large body parts and allows full extension of the lower extremities.
• B. It is designed for immersion of large body parts but does not allow full extension of the LE, reaching only mid thoracic region.
• C. It is designed for near full body immersion with the patient in an upright posture.
• D. It is not used for hydrotherapy.

Answer: (B)

Highboy tanks are designed to immerse a large portion of the body, but not the entire body. Their depth typically brings water up to about the mid-thoracic region, so the trunk and hips can be submerged while the legs remain partially out of the water. This setup lets you get the therapeutic benefits of warm water and buoyancy for the upper body without requiring full-leg immersion. That’s why the statement describing immersion of large body parts with the lower extremities not fully extended, reaching only the mid-thoracic area, is the best description.