There are many clinical reasons for shoulder and leg pain, for example, if a patient has a brain problem, a brain infarction, a brain tumor, or a brain hemorrhage, shoulder and leg pain may occur at the same time. Cervical spondylosis and some individual diseases, such as frozen shoulder, can also cause shoulder pain. There are many causes of leg pain, the most common of which are femoral head necrosis, hip synovitis, osteoarthritis of the hip, osteoarthritis of the knee, meniscus injuries, and synovitis of the knee, etc. All of which may cause leg pain. In addition, problems in the lumbar spine, such as herniated discs, lumbar spondylolisthesis, lumbar spinal stenosis, etc., can also cause leg pain when they compress the spinal nerve roots.