If a patient has right-sided lumbar pain and cannot bend down, it may be due to the following reasons: First, such patients may have right-sided lumbar muscle spasm, which may lead to a transient muscle spasm in the right-sided lumbar region when the patient is strenuously active or suddenly does intense activities such as running. At this time, the patient will have pain here, and there will be obvious limitation of lumbar activities, such as the patient can not bend over or keep the waist straight. Secondly, it is also seen when the patient has an injury related to the right side of the lumbar region. An acute strain of the right side of the lumbar muscles or a transverse process fracture of the right side of the lumbar region may lead to the above symptoms. Third, it is also common for patients to have deep internal lesions of the right side of the waist, such as when patients have kidney stones or ureteral infections on the right side, the above symptoms may occur.