Frozen shoulder, or periarthritis, refers to a wide range of chronic sterile inflammation of the joint capsule and soft tissues surrounding the shoulder joint, mainly causing pain and dysfunction of the shoulder joint. In my clinical practice, I combined with anatomy and focused on the treatment of the oblique, scapularis, supraspinatus and subscapularis muscles with the popping method, which has good pain relief effect. 1, the front and middle oblique muscle The front oblique muscle is located in the deep side of the sternocleidomastoid muscle, starting from the posterior node of the transverse process of the cervical vertebrae 3~6, going forward and outward, ending at the oblique muscle node in the middle third of the front of the first rib. The subclavian vein is located anterior to this muscle and posterior to the clavicle. The middle oblique muscle starts from the posterior node of the transverse process of the 2nd to 6th cervical vertebrae and ends above the first rib, which is located posterior to the anterior oblique muscle and the subclavian artery sulcus. The anterior and middle oblique muscles and the first rib form the triangular gap of the oblique muscles, between which the brachial plexus nerve and the subclavian artery pass (1). The oblique muscle is an auxiliary respiratory muscle that elevates the first rib to assist in breathing. When pathological changes or congenital developmental abnormalities occur in the anterior oblique muscle (such as muscle spasm and muscle hypertrophy caused by stimulation of the anterior oblique muscle due to cervical spondylosis, inflammation and other peripheral pathologies; anatomical variation of neurovascular penetration from the belly of the oblique muscle), it can directly or indirectly lead to vascular nerve compression, commonly in the subclavian artery and the inferior nerve trunk composed of cervical 8 thoracic 1, with vascular symptoms, ulnar nerve and median nerve symptoms, producing upper arm medial, forearm, shoulder and neck dull or sharp pain, i.e. anterior oblique muscle syndrome. However, in the treatment of periarthritis, pain rarely occurs in the oblique angle muscle, and the following methods can be applied to quickly relieve shoulder and upper extremity pain. Treatment technique: To treat the anterior oblique angle muscle, first pull open the sternocleidomastoid muscle, then flick the tip of the middle finger along the posterior edge of the sternocleidomastoid head toward the spine 10 times, then flick the tip of the finger downward and flick it laterally on the medial side of the clavicle head 6 times. Note: Pay attention to avoid the artery when doing the technique. 2.Scapularis Lift The upper end of the scapularis lift muscle is attached to the side of the upper four cervical vertebrae, and the lower end is attached to the medial edge of the top angle of the corresponding scapula. It can elevate the scapula and assist in turning the head to the same side. Acute sprain of the neck, scapular compression or excessive contraction can cause injury to the scapular raphe, commonly resulting in difficulty turning the head and pain from the suprascapular angle to the neck. Treatment technique: flick the thumb with greater force at the top of the upper scapular angle and at the midpoint of the line connecting the mastoid and Fengchi points (i.e., the upper and lower ends of the muscle). It has a reliable effect on cervical shoulder pain. 3.Supraspinatus muscle The supraspinatus muscle is located in the space at the top of the scapula above the scapular gland, starting from the supraspinatus fossa, passing through the deep surface of the acromion, crossing over the shoulder joint and ending above the greater tuberosity of the humerus. Function: It has the function of a lever in order to lift the arm. It also allows it to assist the other rotators to maintain the stability of the shoulder joint. Symptoms: Deep pain in the lateral aspect of the shoulder. Extreme pain even when preparing to lift the arm. Raising the arm over the shoulder is almost impossible. The cause of the injury is mainly due to excessive movement, the need to lift the arm or elbow overhead for long periods of time at work, falls, etc. Treatment technique: Use both thumbs to flick the back of the shoulder blade above the scapular gland. This can quickly reduce the pain and increase the mobility of the shoulder joint. Note that the strength should be moderate, so as not to aggravate the tendon injury and pain. 4.Subscapularis muscle The subscapularis muscle is located under the scapula, adjacent to the rib cage and attached to the humeral head. It can make the arm rotate internally, help stabilize the shoulder joint and maintain the position of the humeral head in the joint. The movement of the arm up and rotation is most likely to cause injury, resulting in severe pain deep in the posterior shoulder and dorsal wrist pain. Since pain reduces the range of motion of the shoulder joint and limits arm rotation, subscapularis injury is one of the main causes of shoulder “freezing”. Treatment technique (1): The patient sits with the chest up, the back of the affected hand on the hip, and the doctor sits behind the patient, with the four fingers together, and inserts the subscapularis along the angle of the scapula and flicks it inside the scapula. Technique (2): The affected shoulder is tucked in, the hand is placed on the opposite shoulder, the doctor faces the patient and inserts the four fingers together along the rib cage from the armpit to the scapula and moves downward. Each point can be done 6-10 times. It can quickly reduce pain and increase mobility. Pay attention to gradually increase the strength during the maneuver to reduce the pain. 5. Conclusion The treatment of frozen shoulder is based on closed therapy and self-exercise in Western medicine, massage and acupuncture in Chinese medicine, and pain relievers in physical therapy. Massage therapy is based on meridian points. In the treatment, the author integrates the strengths of various schools of thought and focuses on the relevant muscles for flicking treatment, which has a better effect on pain relief.