The hip flexor muscles serve to flex the thigh and pull the knee upward. Hip flexor injury is typically caused by an acute (specific) injury during an explosive movement such as kicking, changing direction quickly, or breaking into a sprint. The injury could be a sign of core weakness such as weak abdominals.
The pain typically presents on the front of the hip and can radiate down the thigh and will become worse when attempting to move the leg forward or upward.
Treatment entails resting, icing, light stretching, and eventually balance training and strength training. Using KT Tape will help to increase blood flow as well as send positive signals to the muscles affected. These signals promote rest, support, and healing.