Abstract
Chronic myofascial pain is a very common pathological condition, but the diagnosis can be complex. Elastosonography can be a valuable aid to diagnosis by demonstrating increased stifness of the myofascial unit. In addition, it can demonstrate the reduction in stifness after performing a fascial plane block by allowing the effectiveness of the block to be evaluated. In this case series we present cases of patients evaluated with elastosonography before and after fascial plane block and demonstrate the differences.