Rectus femoris myofascial muscle injury is a rare type of rectus femoris muscle injury. It usually involves the proximal and the middle thirds of the muscle. It also has a prediction to the posterolateral aspect of the muscle. On MRI, the muscle shows an abnormal edema signal involving its posterolateral aspect, if the overlying fascia of the muscle is intact, the fluid will dissect between the muscle and fascia, while if the overlying fascia is torn, the fluid will dissect along the adjacent fascial planes. This type of injury is common to recur and form seromas if the player has resumed activity before the complete healing of this injury.