Comparison between superficial and deep acupuncture in the treatment of the shoulder's myofascial pain: a randomized and controlled study.

The principle aim of the present work is the evaluation of the importance of the variable "depth" of needle insertion in the determination of acupuncture's therapeutic results. A randomized clinical trial carried out on 44 patients belonging to two groups of 22 each, suffering from shoulder myofascial pain: group A: superficial acupuncture; group B: deep acupuncture. All of them subjected to the same model of treatment with 13 needles and the treatment of the most painful 4 trigger points (TP) found in the shoulder's area.