Small needle knife is a new medical apparatus shaped like an acupuncture needle, with a diameter of 0.8mm and a flat front with an edge. It can enter the damaged tissues for loosening, unblocking, stripping and meridian adjustment without pain, so as to achieve the purpose of relieving pain and eliminating disease. Its indications are mainly painful diseases such as cervical spondylosis, frozen shoulder, tennis elbow, lumbar disc herniation, osteoarthritis, tenosynovitis and achalasia. Small needle knife therapy has the advantages of simple operation, small trauma, significant curative effect, etc. No need to rest after surgery, no obvious pain and fear of patients, easy to accept. 1, “balloon” theory pathological factors (wind, cold, dampness, trauma) under the influence of the body’s local tissue inflammatory exudation, and then the formation of a high-pressure area in the local. If the balloon is continuously inflated, the volume of the balloon will increase and the tension of the nerves attached to the balloon will also increase, resulting in pain. In fact, the inflammatory exudate appears in the fascial cavity, the pressure increases, the fascial surface tension increases, the sensory nerve endings through which will also bear the corresponding tension, at this time there is traction stimulation (muscle tension or spasm) can cause pain, small needle knife can make the fascial cavity pressure recovery, the pain disappears. 2, “tear cloth” theory local inflammation of the body is not treated in the early stage, continue to develop, the lesion will appear scar, adhesions, will appear chronic pain, sometimes good, sometimes bad, sometimes light, sometimes heavy, warm pain, cold aggravation, lingering difficult to heal. Small needle is the best way to loosen adhesions. It is much less traumatic than surgical release. And the risk is small, also has the advantage than closed, closed loosening of adhesions is not complete, easy to recur. So how does a small needle loosen extensive adhesions? For example, a piece of cloth, two hands grasp one end, want to tear is not very easy, but if in the middle of the cloth with scissors to make a small cut will be torn open. Similarly. The most serious adhesions are released by small needle knife (small needle knife is the same as scissors) and then combined with the doctor’s treatment and the patient’s functional exercise, the adhesions will be completely restored.