Ian Uses a Quickie Manual Wheelchair with a Planar Seat

question 8

Multiple Choice

Ian uses a Quickie manual wheelchair with a planar seat cushion. He extends very hard out of his seating system, pushing up against the abductor (medial thigh) support. His mom says that even with the seat belt Ian will not stay back in the seat unless this abductor support is secured onto the chair. The most likely cause of Ian's positioning problem is

• A) the abductor support/pommel is not working effectively and should be tighter and more secure.
• B) a lack of sufficient lateral trunk support.
• C) the seat cushion is not providing sufficient contour or firmness to give the best posterior support for his pelvis.
• D) a lack of sufficient anterior trunk support.

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Definitions:

Sedimentary Facies

Different sections of a sedimentary environment that exhibit distinct characteristics in terms of composition, appearance, and means of origin.

Regression

Regression in geology refers to the retreat of the sea from the land, resulting in the exposure of previously submerged areas, often indicating a relative drop in sea level or uplift of the land.

Subduction

The process by which one tectonic plate moves under another plate and into the mantle, often associated with volcanic activity.

Mudcracks

Patterns of cracks formed by the drying of mud, indicative of alternating wet and dry conditions, found in both modern and ancient sediments.