Spring washers, sometimes called disc springs, are a subtype of washers. They lend their mechanical capabilities to the unique profile of the material: when subject to a load, the irregularities of the washer compress with a proportionate resistance to return to their predeflected shape.
You should never stretch a pulled muscle to the point of pain or you risk re-injuring it. Do not overstretch the pulled muscles. Too much stretching can retear injured muscle fibers. Gently stretching a pulled muscle may relax the surrounding muscle fibers, which may be tight in response to the injury.
Technique. A 6cm incision is made along the inner side of the tendon. The torn tendon is exposed and the 2 ends are strongly stitched together so that there is the correct amount of tension. There is usually a very small tendon that runs alongside the Achilles which almost invariably remains intact.ecovery It is usually possible to start light jogging after 12 weeks and return to normal sports by 6 months. The Achilles is usually thickened after surgery and while this may reduce slightly with time it is normal for it to remain slightly thicker than the other side.