How should lumbar muscle strain be assessed through auxiliary examinations? What auxiliary examinations are needed for lumbar muscle strain? Clinically, lumbar muscle strain is quite common; out of every ten people, at least two or three have it. The characteristic of these patients is that their symptoms are severe but their physical signs are mild. Therefore, when encountering such patients, a screening process is generally required, which involves a method of exclusion. After examination, an X-ray is usually taken first to check for obvious lumbar spondylolisthesis, the severity of bone hyperplasia, and any traumas, whether fresh or old, that might have caused vertebral fractures. Then, some people might need a CT scan, which aims to exclude lumbar disc herniation. Many patients do not have herniated discs, or only have slight bulging, but their symptoms are severe, making them restless. Generally, there is no need for an MRI, but some patients strongly request an MRI examination. After the MRI, sometimes high-density shadows can be seen in the muscles of the lower back, which might be caused by injuries within these muscles. Therefore, the auxiliary examinations for lumbar muscle strain are usually negative, with few positive findings, which is a characteristic of this condition.