Definition of principal for English Language Learners. : 1  the person in charge of a public school. : 2  the person in charge of a university or college. : 3  an amount of money that is put in a bank or lent to someone and that can earn interest.
A quadriceps contusion is one of the more common injuries seen in athletes competing in contact sports and results from a direct blow to the front of the thigh.This type of injury often goes undertreated and may result in serious complications for the athlete.ecause of the location of the quadriceps, they can be subject to direct blows during sports competition. A deep quadriceps contusion can be one of the most disabling injuries for an athlete because injury to these muscles can severely impact an athleteâs ability to effectively use his/her leg.
Anatomy Chart courtesy of FCIT. The Quadriceps are a group of four muscles that sit on the anterior or front aspect of the thigh. They are the Vastus Medialis, Intermedius and Lateralis and finally the Rectus Femoris. The Quadriceps attach to the front of the tibia and originate at the top of the femur. The exception to this rule is the Rectus Femoris which actually crosses the hip joint and originates on the pelvis.