Rib ectropion can be determined by lying down and stroking the ribcage, placing both hands on the lower end of the ribcage, and so on, and you can consult a professional doctor for details. 1. Lying down and stroking the ribs: You can lie down and then stroke the bones of the ribs with your hands. If the ribs appear to be protruding outward, it may be caused by rib ectropion. 2. Hands placed on the lower end of the ribs: you can place your hands on the lower end of the ribs, if the angle of the ribs is greater than 90 degrees, it may be caused by rib ectropion, but we still need to consult a doctor in time, and make a judgment under a professional doctor in order to confirm the diagnosis. If the self-test has rib ectropion, in fact, there is no need to worry too much, rib ectropion usually does not need treatment. If you feel uncomfortable when your ribs are tilted, it is recommended that you seek medical attention to identify the cause of the problem before treatment.