Investigating the Minimum Number of Needling Required to Optimize Trigger Point Injections Outcome

A 5- or 10-ml syringe will be filled equally with 1% plain lidocaine and 0.25% plain bupivacaine. A 1.5-inch 25-gauge needle will be attached to the syringe. The needle will be carefully inserted at the first trigger point and 2 mls of the mixed local anesthetic will be infiltrated. At that point, the needle will be carefully inserted into the trigger point based on the group assigned. Once needling is done for the first trigger point, the process will be repeated in exactly the same fashion for the remaining points.