The clinical manifestations of lumbar small joint disorder are lumbosacral pain, lumbar activity limitation, pressing pain, small joint subluxation and so on. 1. Lumbosacral pain: due to ageing and degeneration of the natural functions of the human body, lumbosacral small joints have osteophytes, and the joints are irritated by pressure, which can be manifested as localized pain during activities. 2. Restricted lumbar activities: Because of the severe pain, the patient’s lumbar activities are restricted, presenting a sitting or lying position, not dare to move. The pain is relieved when resting in bed. 3. Pressing pain: lumbar small joint disorder, there will be obvious pressing pain at the small joints of the lumbar vertebrae, as well as muscle tension and spasm. 4. Semi-dislocation of small joints: when the patient repeatedly bends and twists the waist, the small joints will be easily dislocated, and even the tendons will be pressed.