Tires â Retreading is less expensive than new tires and is a large portion of this cost. Although mere pennies per mile, an average tire can cost over $250 and annual tire expenses can exceed $4,000 ($0.03 per mile), enough to purchase 16 new tires annually, but still not enough to replace every tire of an 18-wheeler.
With the head in a forward position, a passive tensile force is created in the hyoid muscles resulting in hyoid muscle tension, causing the mandible to be depressed and translated posteriorly. The patient is therefore forced to contract the temporalis and masseter muscles to keep the mouth closed.
Definition of Terms 1. Forward head rounded shoulder posture (FHRSP) group: subjects presenting with forward head posture and rounded shoulder posture on assessment of sagital plane photo with superimposed lines and angles measured with Adobe Â® Photoshop 7.0 2. Ideal posture group: subjects presenting with ideal head posture and ideal shoulder