Apparatus and system for turning and positioning a patient

A method comprising:

• placing a sheet above a support surface of a bed, the sheet having a bottom surface confronting the support surface, a top surface opposite the bottom surface, a head edge placed proximate to a head of the bed, and a foot edge placed proximate to a foot of the bed;
• placing a patient on the sheet after the sheet is placed above the support surface;
• and
• inserting a wedge beneath the sheet and beneath the patient by moving the wedge away from a side edge of the bed and toward and beneath the patient, the wedge having a wedge body having a base wall, a ramp surface, and a back wall, the ramp surface joined to the base wall to form an apex, such that the base wall confronts the support surface and the ramp surface confronts the bottom surface and the patient, the ramp surface supporting the patient in an angled position after insertion of the wedge beneath the sheet and beneath the patient;
• wherein the base wall has a base engagement member configured to engage a surface of the bed to form a selective gliding assembly that is configured to:
• resist movement of the wedge with respect to the surface of the bed in a first direction away from the patient and toward the side edge of the bed, and
• facilitate movement of the wedge with respect to the surface of the bed in a second direction from the side edge toward the patient to ease insertion of the wedge beneath the sheet such that a first pull force necessary to create sliding movement of the wedge in the first direction is greater than a second pull force necessary to create sliding movement of the wedge in the second direction.