How to self-examine for lumbar disc herniation?

There are the following points, you have a higher possibility of suffering from lumbar disc herniation, please visit a professional orthopedic surgeon. 1.After an acute lumbar sprain, is there claudication. 2.Whether the lumbar pain is aggravated by coughing gently. 3.After resting in supine position, the pain still cannot be relieved. 4.In the supine position, press the posterior lumbar region, the middle and both sides of the lumbar vertebrae by yourself or others with your hands to check whether there is obvious pressure pain. 5.In the supine position, then sit up and observe whether the knee joint is flexed due to pain in one’s lower limbs. 6.In supine position, straighten the knee joint on the affected side and elevate the affected limb, and observe whether its height is restricted due to pain.