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Related Experiment Videos

Activity positioning and ischial tuberosity pressure: a pilot study.

C A Park1

  • 1Center for Neuro-Educational Therapies, Eugene, Oregon 97401.

The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association
|October 1, 1992
PubMed
Summary
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Repositioning activities to the front or side can help wheelchair users reduce ischial tuberosity pressure. This study found that forward and lateral placements are effective in managing seating pressure.

Area of Science:

  • Rehabilitation Engineering
  • Biomechanics
  • Human Factors Engineering

Background:

  • Wheelchair users are at high risk for pressure injuries.
  • Ischial tuberosity pressure is a key factor in pressure injury development.
  • Current pressure relief techniques may be supplemented by activity positioning.

Purpose of the Study:

  • To investigate the effect of activity positioning on ischial tuberosity pressure in wheelchair users.
  • To compare pressure distribution during reaches to activities on flat versus upright planes.
  • To determine if forward or lateral activity placement can reduce seating pressure.

Main Methods:

  • 12 subjects seated in wheelchairs participated.
  • Ipsilateral ischial tuberosity pressure was measured using a static pressure device.

Related Experiment Videos

  • Pressure was recorded during reaches to activities positioned on flat and upright planes (forward, lateral, cross-body).

    • Main Results:

    • No significant difference in overall pressure between flat and upright plane activities.
    • Significant differences in pressure were found between reach types (cross-body, forward, lateral) on the flat plane.
    • No significant difference in pressure was found between reach types on the upright plane.

    Conclusions:

    • Forward and lateral positioning of activities can effectively reduce ischial tuberosity pressure.
    • Activity placement offers a supplementary method for pressure relief in wheelchair users.
    • This finding supports proactive strategies for preventing pressure injuries.