[Blind corticosteroid injection as primary treatment of trigger finger].

Trigger finger (TF) is a common condition with a lifetime prevalence up to 2%. Local corticosteroid injection at the level of the A1 pulley is a frequently used and safe treatment for TF with cure rates around 50% in randomised controlled trials, while surgical release has cure rates near 100% but more severe complications. Blind local corticosteroid injection has the same effect as ultrasound-guided local corticosteroid injection on cure rates, and the effect remains the same, whether the steroid is placed intra-sheath or extra-sheath. The treatment of TF can be carried out as blind local corticosteroid injection in general practice before possible referral to an orthopaedic specialist.