 All 111 trial participants will be contacted by telephone by a researcher and given information about this extended follow-up. A questionnaire together with written information and consent forms will be sent by mail. The questionnaire consists of the CTS symptom severity sale, 11-item DASH scale, bodily pain scale, and a treatment satisfaction visual analog scale VAS, that were used in previous follow-up evaluations. The questionnaire will also include the 6-item CTS symptoms scale CTS-6 and the palmar pain scale. The patients will be asked whether and when they had undergone carpal tunnel release surgery on the study hand after they received the injection within the trial. Patients records will be reviewed to verify data about subsequent surgery on the study hand. 