Lumbar small joint disorder syndrome is also known as small joint synovial imbrication. It is mostly due to acute lumbar sprain or bending and rising up, causing the synovial membrane to embed between the small joints, resulting in interlocking or dislocation of the small joints and limiting the movement of the spine. Patients tend to lie on their sides in flexion, with emotional tension and muscle tension, afraid to move for fear of being touched or moved by others. Any movement of the spine, coughing, or vibration will make the pain worse. Due to the pain, the lumbar muscles are in protective muscle spasm and the lumbar spine becomes flat or slightly posteriorly convex or slightly laterally convex. The disease is mainly characterized by lumbar pain, and the presence of radiating leg pain is less common. Causes of lumbar small joint disorder syndrome: 1. Mostly, the joint gap widens on one side of the lumbar rotational movement or sudden turning or upright stretching, generating negative pressure, and the synovial membrane is sucked into the joint, and the synovial membrane is caught between the joint surfaces when the lumbar is straightened. The synovial membrane of the joint has the distribution of the medial branch of the posterior nerve, so it can cause severe pain. 2, small joint dislocation as age increases, the degeneration of the intervertebral disc gradually occurs, the synovial joint stability is affected, shear stress can be generated, which can cause small joint dislocation or even subluxation. 3, small joint degenerative arthritis long-term extension and flexion and lateral movement of the intervertebral loosening, the load per unit joint area increases, the articular cartilage and subchondral bone stress increases. 4, but also because of the surrounding joint capsule damage to produce bone superfluous and other small joint disorders. Treatment of lumbar spine small joint disorder syndrome: acute stage: treatment is mainly bed rest, while oral pain relievers and antispasmodics can be taken to relieve and eliminate lumbar muscle spasm, reduce the pressure of the intervertebral joints, and promote the withdrawal of the embedded synovium. Tui-na manipulation can loosen the synovial embedded membrane and restore the joint position to normal, which can relieve spasm and relieve pain. After the symptoms are relieved, bed rest, local physiotherapy and internal and external application of Chinese medicine should be used to consolidate the treatment effect; chronic period: strengthen the exercise of lumbar and back muscles, pay attention to the protection of the lumbar region, and use lumbar strength correctly to prevent recurrence. If necessary, small joint capsule closure can be used to relieve pain and antispasmodic in the acute stage and analgesic and anti-inflammatory in the chronic stage.