Mixing in new tires with worn tires? When replacing two new tires instead of four, be sure that your new tires are the same size and tire type as your current tires, and that your dealer always installs the new tires on the rear axle of your vehicle.
Both your feet and your hands have extrinsic and intrinsic muscles. Extrinsic muscles originate far away from the joints that they move. For the foot, there are toe muscles that start on the shin bones and turn into tendons that attach on the ends of the toes.he intrinsic muscles are like the âcoreâ muscles of the foot. Because they are deep and donât cross over too many joints, they can work well in stabilizing and protecting the arch and structures within the foot. If the foot intrinsic muscles are weak, the foot structures are more prone to increased stress and injury.
Muscles in the foot also help support the medial longitudinal arch. 1  These include: 2  flexor hallucis longus. 3  flexor digitorum longus. 4  abductor hallucis. 5  flexor digitorum brevis muscles. 6  tibialis posterior, which is the most important muscle in the maintenance of the arch as damage to its tendon results in collapse of the arch. The tibialis posterior and anterior muscles help to raise the medial border of the arch whilst the flexor hallucis longus acts as a bowstring.