A tendon tugging pain in the back can be interpreted as a stiffness in the patient’s chest and back, with soreness, pain, and involvement pain. The common diseases that can cause this symptom clinically are roughly as follows: 1, caused by trauma, including strains and contusions, left upper chest, back, incision injuries after surgery, etc. Patients can experience such pain during the recovery period. 2, when suffering from thoracic dorsal myofasciitis and supraspinous ligamentitis, they can also have this symptom. The pectoral muscle is in a state of long-term strain and ankylosis, which can appear as localized soreness and pain without timely treatment.