IRCT20131108015322N6 IRCT 2022-02-06 Shahid Beheshti University of Medical Sciences The effect of axillary block with subcutaneous injection of local anesthetic on tourniquet pain relief Comparison of the effect of axillary block alone versus axillary block + subcutaneous injection of local anesthetic on tourniquet pain relief in upper limb orthopedic surgeries 2022-01-10 anticipated 78 Complete https://irct.ir/trial/61009 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Prevention, Randomization description: Participants are randomly assigned to 1 of 2 groups following simple randomization by using a random numbers table. The allocation sequence is concealed in sealed envelopes. In the operating room, the envelope is opened by an investigator with no clinical involvement in the trial, Blinding description: Randomization and assignment of patients in each group is done by a person not involved in the study. The investigators and persons who measures the outcome in two groups are also kept blinded. 3 Prevention of upper arm tourniquet pain during orthopedic surgery performed under axillary brachial plexus block.. Intervention 1: Control group: axillary block + subcutaneous infiltration of 5 ml of normal saline in the upper inner part of the upper arm. Intervention 2: Intervention group: axillary block + subcutaneous infiltration of 5 ml of lidocaine 1.5 % in the upper inner part of the upper arm. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no further information.