Because Every Body is Different

Every wheelchair user is different, with their own individual needs and this own unique set of challenges.

A solid foundation is the base for a stable posture, requiring a cushion to support the user’s pelvis for their unique physical requirements. Which is exactly what the Constructa cushion does.

Our Most Anatomically Adaptable Cushion

The latest research shows that asymmetric limited hip flexion is closely linked to the development of other conditions, including pelvic obliquity, trunk asymmetry, scoliosis and windswept hip distortion.

A wheelchair cushion that can accommodate asymmetrical hip angles is able to maintain or improve posture over time, instead of contributing to the development of other postural conditions.

The Constructa system is a range of modular cushions which can adapt to accommodate complex postural needs for users of all ages. From simple seating requirements to the most challenging demands, the result is better seating which minimises pressure while maximising comfort.


Available in 14″ – 20″ Widths

An array of improved positioning features (including adjustable blocks for growth or asymmetry as well as adjustable contours for thigh and pelvic control) dramatically enhance the adjustment range.

A structured ischial well distributes and offloads pressure, adding to the comfort and overall experience for the user. This ability to provide complex custom solutions with off-the-shelf products means clinicians can quickly provide relief for users with a wide range of physical challenges, including…

  • Flexion limitations
  • Pelvic obliquities
  • Windsweeping
  • Abduction
  • Leg length discrepancies
Who can use
a Constructa Cushion?

The Constructa range of cushions was designed to accommodate and compensate for a wide range of symmetric and asymmetric postures.

Users who will benefit the most from this highly adaptable system include…

  • Those who need to balance, stabilise, and maintain positioning of the legs and pelvis.
  • Those who need pressure relief under bony prominences.
  • Those who may need changes in position due to growth or surgery.
  • Individuals leg length discrepancies, wind-swept, pelvic obliquity, pelvic rotation, posterior/anterior pelvic tilt.
  • Individuals with a moderate risk of pressure injuries/decubitis pressure sores.
  • Individuals with adduction and abduction of the legs.

Clinical Applications

The ground-breaking design of our cushion gives therapists the ability to create a configuration which satisfies even the most complex postural requirements. In doing so, the Constructa Cushion will help…

  • Prevent the ischial tuberosities from sliding forward.
  • Provide offloading of the ischial tuberosities.
  • Obtain correct hip angles and flexion angles of the thighs.
  • Maintain correct transverse thigh angles.
Product Codes
Size Chart
Width 14″ 16″ 18″ 20″
Weight Capacity 90kg 90kg 136kg 136kg
Cushion Height 12cm 12cm 13cm 13cm
Product Weight
(16″ x 16″)
Contour Standard (SC) High (HC) Superhigh (SS)
Lateral Thigh Support Height (Trough Height) 3cm 5cm 8cm
Lateral Pelvic Support Height 3cm 5cm 5cm
Adjustment Properties
Hip Flexion 15°
Hip Abduction 30° (15° each leg)
Windswept Posture 15°
Pelvic Obliquity 5cm
Pelvic and Thigh Width SC: -2″
HC: -2″ to +1″
SS: -2″
Leg Length -3″
Leg Length Discrepancy -1″


These specifications define the standard range of adjustability offered by Constructa cushion models. Further adjustment or modifications can expand the adjustment range beyond these specifications.

Transport Certified. All Spex Cushions are suitable for transport in a vehicle when mounted on an appropriate wheelchair frame.


Code 1102-WWDD-FXXX
With Spare cover: -XCXX
Without Spare Outer Cover: -X0XX

Introduction to the Constructa Family
Covers and Overlays: User Guide
Flex Base Adjustment: User Guide
Positioning and Contour: User Guide
Advanced Adjustments: User Guide