Patient Safety During Assistant Propelled Wheelchair Transfers: The Effect of the Seat Cushion on Risk of Falling

Ergonomic guidelines for the design interfaces of additive modules for manual wheelchairs: sagittal plane

When designing wheelchair propulsion systems operated with the upper limb, there is a noticeable lack of ergonomic analyses informing about the areas on the wheelchair frame where hand-operated controls can be installed. With that in mind, a research goal was set to measure the areas of human hand reach within the area defined by the structural elements of a manual wheelchair. An ergonomic analysis was performed on a group of ten patients representing 50% of anthropometric dimensions. Motion capture and image analysis software based on the openCV library were used for the measurement. The conducted research resulted in the development of a map of the hands range in the lateral plane of the wheelchair, parallel to the sagittal plane. In addition, the map was divided into three zones of hand reach, taking into account various levels of comfort of hand manipulation. The total hand reach area was 1269 mm long and 731 mm high, while the most comfortable manipulation area was 352 mm long and 649 mm high. The plotted hands reach areas act as a map informing the designer where on the sagittal plane additional accessories operated by the user can be installed.

Experts' opinion on manual wheelchair adjustments for adults with diabetes

Diabetes is a global health concern that can lead to mobility limitations necessitating a wheelchair. However, there are currently no guidelines for wheelchair adjustments tailored to the diabetic population.

PURPOSE

To describe relevant manual wheelchair adjustments for adults with diabetes, and to explore how these adjustments apply to populations living in less-resourced countries.

METHODS

Semi-structured interviews were conducted with 13 wheelchair experts from five different countries working with adult with diabetes. Interviews were analyzed using the constant comparison method.

RESULTS

The most frequently mentioned wheelchair adjustments were related to neuropathies, skin integrity, decreased strength and amputations. Air cushions were preferred for managing seat sores. Lightweight wheelchairs could be advantageous for people with decreased strength and endurance. In less-resourced settings, wheelchair adjustment decisions prioritized durability and low maintenance.

DISCUSSION

The recommendation of lightweight wheelchairs for adults with diabetes may be limited by the lack of adjustment possibilities compared to regular weight wheelchairs. In less-resourced settings, prioritizing durability and low maintenance may limit prevention and management of conditions associated to diabetes.

CONCLUSION

This study represents a first step towards the development of guidelines for manual wheelchair adjustments specifically tailored to adults with diabetes, in a global health context. Implications of rehabilitation When prescribing manual wheelchairs to persons with diabetes, expert clinicians agree that skin integrity, neuropathies and decreased strength are their primary concerns. Compromises are often necessary when adjusting a wheelchair for a person with diabetes, due to the complexity of their symptoms: same modification can be indicated for one symptom but contraindicated for another. Diabetes prevalence is high in less-resourced settings. There is a need for increased availability of affordable wheelchair equipment that is durable, reliable and adapted to persons with diabetes.