The lumbar spine feels bulging out when you feel the bones at the lumbar spine, it may be a localized lumbar spine slippage, or it may be a bony mass formed by other bone tumor lesions, and there are other diseases that cause it. You can go to the orthopedic department to see a doctor in time, and the doctor will make a preliminary analysis with the physical examination. You can routinely improve the lumbar spine X-ray examination, if necessary, combined with CT and three-dimensional reconstruction, can accurately determine whether there are obvious abnormalities in the bony structure, resulting in protrusion. If it is a local protrusion caused by severe lumbar spine slippage, surgery can be chosen. If it is caused by a tumor lesion protrusion of the lumbar spine, surgery can be chosen for primary tumors without obvious metastases. If it is a local protrusion of a tumor with metastasis in the lumbar spine, it is generally difficult to remove it completely surgically, and it is mainly protected by braces to prevent pathological fractures.