A rupture of the Achilles tendon is dramatic when it happens as the tendon is so important for normal function. The biggest issue with a rupture is to treat it conservatively or with surgery. There is no consensus.

Curated Resources:
https://podiatryarena.com/index.php?threads/achilles-tendon-rupture.13205/ (Podiatry Arena)
http://www.prlog.org/11916475-tough-decision-to-know-what-to-do-with-an-achilles-tendon-rupture.html (PRLog)
http://www.drthefootwithoutthedoc.com/achilles-tendon-rupture/37/ (Dr The Foot)
http://www.toningshoestoday.com/do-toning-shoes-casue-an-achilles-tendon-rupture/99/ (Toning Shoes)
http://podiapaedia.org/wiki/orthopaedics/trauma/achille-tendon-rupture/ (PodiaPaedia)