Transcatheter Arterial Embolization Using Nexsphere-F for Chronic Shoulder Pain Refractory to Conservative Treatment

Inclusion Criteria: * Patients who have voluntarily signed a written informed consent form after receiving an explanation of the purpose, methods, and potential effects of the clinical trial * Patients aged between 19 and 85 years * Patients with pain persisting for more than 3 months in the affected area and with a history of receiving physical therapy, analgesics/anti-inflammatory medications, or local injection treatments * Patients with a measured shoulder joint range of motion (ROM) of less than 90 degrees ⑤ Patients who agree not to receive any conservative treatment other than those permitted in this clinical trial (physical therapy, medication \[NSAIDs, opioid analgesics, acetaminophen\], intra-articular injections such as hyaluronic acid) * Patients who are willing to comply with the treatment and procedures of the clinical trial and participate in all follow-up evaluations through hospital visits or telephone surveys Exclusion Criteria: * Patients with a history of surgery on the shoulder joint targeted for the clinical trial prior to screening * Patients suspected of having a full-thickness rotator cuff tear * Patients with bleeding disorders or coagulopathies (e.g., idiopathic thrombocytopenic purpura, hemophilia, disseminated intravascular coagulation) * Patients with advanced atherosclerosis or vasospasm in the arm vessels, or those expected to have such conditions * Patients with a known hypersensitivity to gelatin ⑥ Patients with a known hypersensitivity to contrast media ⑦ Patients who are pregnant or breastfeeding ⑧ Patients with a localized infection at the pain site ⑨ Patients deemed inappropriate for participation by the investigator due to ethical concerns or potential impact on the clinical trial results