Lumbar sacralization is a condition in which the external shape of the lumbar 5 vertebrae resembles the morphology of the sacral vertebrae and forms part of the sacrum, with hypertrophy of the transverse processes on one or both sides in the form of pterygia, which fuses with the sacrum or forms a pseudoarthrosis. Sacralization of the lumbar vertebrae means that the external shape of the lower lumbar vertebrae is very similar to that of the sacral vertebrae, while the lumbar vertebrae have decreased mobility, similar to that of the sacral vertebrae. The lumbar vertebral body portion is seen as 5 sections in the clinical anatomy, where the lowermost 5th lumbar vertebra is followed by the sacral vertebrae, which are connected between the vertebrae and immobile. The 5 lumbar vertebrae are separate and can move. If a patient develops lumbar sacralization, the lowest lumbar vertebrae are connected to the sacral vertebrae during development, resulting in a sacral vertebrae-like morphology with restricted and reduced mobility. If the patient has lumbar sacralization, it is recommended to go to the hospital in time, under the guidance of the doctor for regular treatment, so as to avoid adverse lesions.