Etac Prio 3D


Kyphosis affects the whole body

Aging affects the curvature of the spine. If the spinal curvature exceeds 45°, it is diagnosed as kyphosis. We have created a back support providing space and support in all directions for users with kyphosis and other asymmetries.

Managing to be active

Sitting in a slouched position affects the ability to be active. The head moves forward and drops, which also displaces the centre of gravity. The curved shape of the upper trunk limits the mobility of the shoulder blades, affecting the mobility of the arms. A kyphosis accelerates these symptoms. A lot of energy is used to hold the head up. The sitting position becomes unstable and the degree of activity is limited. The goal is to improve the head position and create a supportive and relaxed position, from the pelvic area to the upper trunk. This will also facilitate activity.

Time to shape up!

Variants and details

Etac item number
Seat depth (mm)
Seat width (mm)
Total width (mm)
Transport weight (kg)
Transport width (mm)
Weight (kg)
40 cm 13420205 390-510 400 590 22,9 560 33,5
45 cm 13420209 390-510 450 640 23,2 610 33,8
50 cm 13420213 390-510 500 690 23,5 660 34,1
55 cm 13420217 390-510 550 740 23,8 710 34,4

Seat height 20", 22", 24": 43.5–52.5 cm (17¼-20¾ inch) Seat hight 16": 45 or 47.5 cm (17¾ or 18¾ inch) Back Support height: 45-60 cm (17¾-23.5 inch) Tilt angle: +3° to -20° Back support adjustable: 0° – 30° Balance positions: Etac Prio with 20", 22", or 24" rear wheels has three altarnative balance positions for each seat height. Maximun user weight: 135 kg Seat depth: Three fixed positions. Functional seat depth is measured from the front edge of the seat cushion to the center of the back support cushion. Weight: Measured with arm supports, elevating leg supports, calf support, rear wheels and anti-tippers. Transport weight: Measured without arm supports, elevating leg supports, calf support and rear wheels.



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