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.
The deep muscles of the posterior compartment of the leg are the popliteus, tibialis posterior, flexor digitorum longus and flexor hallucis longus. The gastrocnemius calf muscle is the most superficial of the calf muscles. It inserts onto the heel bone via the Achilles tendon. The gastrocnemius muscle flexes the foot at the ankle joint â that is it acts to point the foot downwards by bending it at the ankle joint, such as when you stand on your toes. This action is known as plantar flexion. The gastrocnemius also flexes the leg at the knee joint.