IRCT20180804040685N3 IRCT 2020-09-09 Tehran University of Medical Sciences Evaluation of the effectiveness of metacarpophalengeal static splint on the adult patients with trigger finger Evaluation of the effectiveness of metacarpophalengeal static splint on pain reduction and function improvement of the adult patients with trigger finger 2020-04-20 anticipated 60 Complete https://irct.ir/trial/49927 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: After initial evaluation, samples will be assigned into one of the 2 groups A or B group using sealed envelops, the patients have to pick up one the sealed envelops, so their group will be defined randomly. N/A The adult patients with trigger finger. Intervention 1: Intervention group: Injection (40 mg Methyl prednisolone) in pulley A1 and splinting of MCP joint; All injections would be made via insulin needle (gauge 29, and length 2.1 inch). Intervention 2: Control group: Injection (40 mg Methyl prednisolone) in pulley A1; All injections would be made via insulin needle (gauge 29, and length 2.1 inch). No - There is not a plan to make this available Justification or reason for not sharing IPD is Patient privacy