This is a big topic with a big outreach, which also determines that the connotation is empty and not specific. Despite this, I am willing to do my little bit to write a little bit about the possible causative factors for those who need to inquire for reference. It is difficult for anyone to say exactly what causes hip pain in young people. But I can look for the cause from the perspective of orthopedic surgery. From the anatomical point of view of the joint, pain can originate from the muscular, vascular, nervous, and skeletal systems. These systems can in turn interact with each other and develop together as the cause. Diseases of the muscular system can be said to have a wide range, including strain caused by prolonged forced posture and chronic inflammation, which is mainly paroxysmal pain; muscle strain caused by high-dose exercise, acute inflammation of muscles and tendons, which is mainly persistent pain; connective tissue diseases (including rheumatoid arthritis, ankylosing spondylitis, systemic lupus erythematosus, scleroderma and other major diseases), which is mainly persistent pain. These pains are mainly persistent, aggravated by cold and accompanied by morning stiffness; tumors originating from muscles and tumors metastasized from other sites, etc. These pains are mainly persistent and should be noticed especially at night. In short, all these factors can cause hip pain. There are also many types of vascular and neurological diseases. Vascular diseases can be subdivided into two parts: arterial and venous sources. Arterial ones can come from blood clots, causing ischemic pain; inflammation of the blood vessels themselves, such as aortitis. Alterations of the arterial wall, true and pseudoaneurysms, etc., which inevitably result in symptoms such as cold limbs, poor nutrition and thinning body hair; diseases of the veins, mainly referring to venous embolism, varicose veins, etc., are easier to diagnose, and such diseases show symptoms such as swelling, superficial varicose veins and exposed bruises. Diseases of the nervous system can come from lesions of the nerves themselves, such as inflammation, tumors, peripheral compression, etc., or from central neuropathy, with lumbar compression being common. These disorders present with burning pain, radiating pain, and other symptoms. There are even changes in muscle strength and tone, with alterations in both temperature and pain sensation. Limb disuse occurs, etc. All this can be changed by neurological examination. Changes due to skeletal system factors are also very common. Many patients start to develop painful symptoms thorium baozhi bed〉nao mai mai mai mai iridium support for the cranial muscle and excel in the hole hole in the wall cooked fatty astatine bottle beer 3な奔洳缓茫级肫 bull’s-eye pure rush to front deer very deceitful fatty (11) quality of the gun is very important to take 1 save the cushion quiet Yi countersink strider 2 cases of hip pain from Texas, as described in the treatment process above, through a simple clinical examination, found that the lower extremities are limited in internal and external rotation movement, so a double hip orthopantomogram was taken and found to be The hip joint was found to be a disease of the hip joint. This example shows that a professional doctor may be required to treat hip diseases in order to reduce the number of detours. General practitioners or surgeons who are limited by objective conditions often tend to diagnose disc herniation. The recognition of hip disease may be a disease of femoral head necrosis. There is no concept of what hip dysplasia, secondary arthritis, synovial chondromatosis, bone tumor, etc. So it is difficult to give a correct conclusion. The pain in this joint disease is characterized by pain in the hip when walking and weight-bearing at the beginning, and the pain is relieved after moving for a while. The onset of the disease is usually in the 30s. As the disease progresses, there is persistent pain and pain at night. Even limping gait, obvious abduction, etc. The diagnosis of this type of disease relies on X-ray examination, MRI can be clearly diagnosed. The above analysis covers a wide range of diseases and requires careful screening for a clear diagnosis and symptomatic treatment.