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PRONEX is constructed from two flexible closed-cell foam moldings, which separate via an inflatable bellows. The �top� molding provides support and pull at the occiput, while the �bottom� molding provides an even base at the upper trapezius as a counterforce.�
The traction unit is designed to be used in the supine position (Harris, 1977), and through design, does not put any pressure on the TMJ. Via the molding/bellow design, the normal cervical lordosis is constantly supported and promoted by this device. The pressure level is controlled by the patient using an inflator bulb with a pressure release valve (identical to a standard sphygmanometer).
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