Efficacy of the Application of Xylocaine Impregnated Compress in Reducing Per-procedural Pain During Ultrasound-guided Infiltration of Trigger Finger

Inclusion Criteria: * Patients aged 18 years or older * Trigger Finger (clinically defined by painful difficulty or protrusion when extending the finger) with an ultrasound-guided infiltration of cortisone derivatives indication. * Written consent * Affiliation to a Social Security system * Prior medical examination Exclusion Criteria: * Neurological conditions affecting the hand other than carpal tunnel syndrome * Intra-articular infiltration of the hand or the wrist ≤ 2 months * Allergy to Xylocaine * Contraindication to Xylocaine or cortisone derivatives * Cognitive or behavioral disorders that make assessment impossible * Persons referred to in articles L 1121-5; 6; 8; 9 of the Public Health Code (protected adults, under guardianship or curatorship, etc) * Pregnancy and breastfeeding; absence of contraceptive method for women of childbearing age * Participant unable to speak, read and write French