In 2015, Derrick Rose, an All-Star guard in the National Basketball Association (NBA), faced another surgery after he tore the medial meniscus in his right knee for the second time in 15 months. The meniscus is a relatively obscure part of the human body, yet this essential piece of cartilage not only threatened Rose’s career, but also hurt his team’s chances of a championship and dashed the hopes of the city where he plays. What a large impact from such a small thing!