The Iliotibial band (IT band) is a troublesome band of tissue that extends from the skin of one's hip to the skin of one's knee. If a person is not used to performing workout routines, there may be a slight boost in knee pain, stiffness or swelling in the beginning. https://www.theorthopaedicandpainpractice.com/do-i-have-a-knee-tendon-injury/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB