Inclusion Criteria:  Patient ≥ 18 years old, Presence of a trigger finger (thumb or long fingers) to be treated Quinnell score >1 Episode of trigger characterized on questioning or clinical examination Failure of a first corticosteroid infiltration ≥ 3 months before inclusion- Thickening A1 pulley on ultrasound ≥ 0.5 mm Patient who has the capacity to understand the protocol and has given consent to participate in the research, Patient with social security coverage  Exclusion Criteria:  Presence of several symptomatic fingers requiring treatment by ultrasound-guided section of the pulley Patient who are pregnant, breastfeeding, or who have the potential to become pregnant without effective contraception at the time of inclusion Known allergy to corticoid (Hydrocortancyl®) including its excipients ((benzyl alcohol, sodium carmellose, sodium chloride, polysorbate 80) Known allergies to lidocaine Ongoing anticoagulant treatments (AVK, New Oral Anti-Coagulants) Local or general infection, or suspicion of infection Live vaccines Evolving viruses (hepatitis, herpes, varicella, shingles) Severe or uncontrolled hypertension Unbalanced diabetes Underlying progressive cardiovascular disease Hemodialysis patients Prosthesis on the finger to be treated Echographic tendon fissure Inflammatory disease (rheumatoid arthritis, spondyloarthritis, connective tissue diseases, etc.) with tenosynovitis. History of surgery on the fingers Dupuytren's disease Patient participating in another interventional clinical research protocol involving a drug or medical device Patient under guardianship, curators or legal protection